KR101846702B1 - Programming education system and programming education method - Google Patents

Abstract

A programming education system according to an embodiment of the present invention includes a memory and programming problem for storing step-by-step programming problems, M test data for one programming problem, and M correct data corresponding to M test data, And a processor for executing a learner process by driving an answer program for submitting, inputting test data to a learner process to obtain learner's answer data, comparing the learner's answer data with correct answer data, and providing the learner with the score information. The processor may provide the learner with the mth test data and the mth correct answer data and / or the mth learner answer data if the mth learner answer data does not match the m correct answer data.

Description

[0001] PROGRAMMING EDUCATION SYSTEM AND PROGRAMMING EDUCATION METHOD [0002]

The present invention relates to a programming education system and a programming education method, and more particularly, to an education system and a method for providing a step-by-step self-directed learning opportunity to a programming learner.

The fourth industrial revolution, triggered by the advent of AlphaGo, is expected to result in a super intelligent / hyperconnected environment through artificial intelligence (AI), Internet (IoT), big data, and cloud systems. Everywhere is competing with software 4.0 to build a smart environment where all things are connected together without time and space constraints.

As the Alpha high case demonstrates the impact of Big Data Utilization and Artificial Intelligence (AI), software engineers will lead innovation, because the main engine of the fourth industrial revolution is software. In order to enhance software national competitiveness, more and more countries are adopting programming courses in the elementary and middle school curriculum, and programming education is indispensable in order not to fall behind in the fourth industrial revolution competition.

Programming or coding means writing a computer program using a computer language such as Java, C or Python. In order to develop a programming ability, a computer language grammar In addition to understanding, it requires more logic and creativity. You will be able to master the grammar of computer language at the beginner, intermediate, and advanced level by solving the programming problems at the level.

Students learn self-level programming problems without the intervention of the instructor. Repeating the process of finding and correcting the wrong parts of their programs helps them develop a high level of logic and creativity while realizing programming principles. In this way, a programming education system that can minimize the intervention of the instructor and cultivate the computer language grammar, logic and creativity through the self-directed programming learning by the learner himself is demanded.

An object of the present invention is to provide a programming education system and a programming education method that provide learner with step-by-step programming problems and opportunities for self-directed programming error correction learning.

According to an embodiment of the present invention, there is provided a programming education system including M stages (where M is a natural number) test data for one programming problem, M test data And a memory for storing M correct answer data corresponding to the learner process, and an answer program to be submitted by the learner for a programming problem, thereby executing a learner process, inputting test data to the learner process, obtaining learner's answer data, And a processor for providing the learner with the scoring information in comparison with the data.

The processor is configured to compare the mth test data and the m correct answer data and / or the mth learner answer data when the mth learner's answer data (where m is a natural number equal to or greater than 1 and equal to or less than M) It can be provided to learners. The processor can provide the learner with the correct answer indication when each of the M learner answer data matches each of the M correct answer data. The programming education system according to an embodiment of the present invention can provide the learner with the correct answer and the execution time information including the time for the learner process to input the test data and output the learner's answer data.

The memory further stores the execution time limit of the programming problem, and the processor can provide the learner with the timeout indication as the scoring information when the execution time of the learner process for the programming problem exceeds the execution time limit.

The memory may further store a plurality of correct answer flags indicating whether the programming problem has a plurality of correct answers and N correct answer data in addition to M correct answer data (where N is a natural number) in the case where the plurality of correct answer flags indicate a plurality of correct answers have. When the m-th learner's answer data does not coincide with the m-th correct answer data and the m-th learner answer data does not coincide with the corresponding plural correct answer data when the plural correct answer flags indicate a plurality of correct answers to the programming problem, It is possible to provide a wrong answer display to the learner as the scoring information.

The processor can perform periodic monitoring to check the identifier of the learner process being executed. The processor can forcibly remove the matching learner process when the identifier of the learner process checked at the first check timing coincides with the identifier of the learner process checked at the second check timing.

According to another embodiment of the present invention, there is provided a method of programming a program, the method comprising: providing a screen showing step-by-step programming problems; A step of providing a screen for receiving the learner's answer program, and a step of, when the learner process driven based on the answer program outputs the learner's answer data by inputting the test data, each of the M learner's answer data is stored in each of the M correct answer data And if the mth learner's answer data (where m is a natural number equal to or greater than 1 and equal to or less than M) does not coincide with the m-th correct data, the mth test data and the m- And providing a wrong answer display screen.

The programming training method according to another embodiment of the present invention is characterized in that when a plurality of correct answer flags are set for a programming problem, the m-th learner's answer data does not coincide with the m-th correct answer data, It is possible to provide a wrong answer display screen.

According to another embodiment of the present invention, when the execution time of the learner process for the programming problem exceeds the execution time limit of the programming problem, the incorrect instruction display screen including the timeout indication may be provided.

The program education method according to another embodiment of the present invention is characterized in that when the identifier of the learner process checked at the first check timing coincides with the identifier of the learner process checked at the second check timing, Screen can be provided.

According to an embodiment of the present invention, the learner can provide the learner with the learning opportunity so that the learner can correct the program error by himself or herself, by providing the learner with the scoring information more than the simple error indication.

According to another embodiment of the present invention, not only the answer result of the answer program submitted by the learner but also the execution time information of the answer program, the execution time rank, the coding size rank, and the like are additionally provided, .

According to another embodiment of the present invention, a programming problem with multiple correct answers can be scored.

According to another embodiment of the present invention, it is possible to operate a programming education system stably by forcibly removing abnormal processes such as an infinite loop.

1 shows a programming education system according to an embodiment of the present invention.
FIG. 2 illustrates the step-by-step programming problems provided by the programming education system in accordance with an embodiment of the present invention.
Figure 3 illustrates the storage area of any programming problem.
FIG. 4 illustrates a process for determining whether or not the learner's answer program is the correct answer.
5 is a diagram for explaining a scoring method for a programming problem having a plurality of correct answers.
6 shows a scoring process according to an embodiment of the present invention.
7 illustrates a method for forcibly removing an abnormal process.

The present invention may have various embodiments through various modifications, and specific embodiments will be illustrated and described in detail in the drawings. It should be understood, however, that the intention is not to limit the invention to the specific embodiments thereof, and that the scope of the invention encompasses various modifications, alternatives and equivalents according to the spirit of the invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. In this specification, the terms "comprise", "comprising", etc. mean that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, Steps, operations, elements, parts, or combinations thereof, are intended to be included within the scope of the present invention. That is, it is to be understood that "comprises" or "comprising" an element does not exclude other elements, but may include other elements, .

Hereinafter, various embodiments of the present invention will be described with reference to the drawings.

1 shows a programming education system according to an embodiment of the present invention.

The USER connects to the DOVELET SYSTEM online via the Internet. In this case, the DOVELET SYSTEM is implemented as a server connected to the Internet or an application running on the server. Can be implemented. Alternatively, the learner (USER) can drive this programming education system (DOVELET SYSTEM) stored in a storage medium such as a CD-ROM or a flash memory through a personal computer, a notebook, a tablet, or a mobile device.

A user connected to the DOVELET SYSTEM can select a problem to suit his / her programming level and the programming area to be studied. The DOVELET SYSTEM can provide step-by-step programming learning problems as shown in FIG. 2 stored in memory. A learner (USER) who chooses a programming problem solves the programming problem by himself and submits his or her answer program. Submitting the answer program means that the learner (USER) uploads, registers, and inputs the answer program to the DOVELET SYSTEM. A programming education system (DOVELET SYSTEM) with a processor evaluates the answer program and displays the scoring information to the learner (USER).

FIG. 2 illustrates the step-by-step programming problems provided by the programming education system in accordance with an embodiment of the present invention.

First, the programming problems are classified into the first to 30th steps according to the learning field. In the first step, you can learn how to use basic input / output functions, how to define variables, arithmetic operations / quotient / residual functions, and so on. The first step is not only an easy problem, but it also provides various problems (1-①, 1-②, 1-③, ...) with beginner / intermediate / advanced difficulty. There are various problems (2-①, 2-②, 2-③, ...) in the second step of learning conditional statements (IF) and arithmetic / There are also various problems (3-①, 3-②, 3-③, ...) in the third step of learning. In the 30th step of learning the hierarchical structure of each computer language grammar, various problems (30-①, 30-②, 30-③, ...) are provided for each degree of difficulty.

The step-by-step learning field shown in FIG. 2 is illustrative and may include, but is not limited to, classification of programming problems according to other criteria. Hereinafter, the storage area of the programming problem 1 - 1 will be described with reference to FIG.

Figure 3 illustrates the storage area of any programming problem.

For example, M test data (TEST-1, TEST-2, TEST-3, ..., TEST-M) for the 1-i problem and 1-i problem are stored in the storage area for the programming problem 1 - , M correct answer data (ANSWER-1, ANSWER-2, ANSWER-3, ..., ANSWER-M), execution time limit (TIME LIMIT), multiple answer flag (FLAG), compile temporary directory do. That is, the storage area of the problem 1 - (1) may refer to a directory or a folder containing information as shown in FIG.

If the learner (USER) solves the programming problem 1 - ① and submits the answer program, the answer program can be compiled using the compile temporary directory (Compile TEMP) of the storage area of the programming problem 1 - ①. That is, the compile temporary directory (Compile TEMP) is a storage area used to compile the answer program submitted by the learner (USER). Next, test data and correct answer data will be described with reference to FIG.

FIG. 4 illustrates a process of determining whether or not the learner's answer program is the correct answer.

When the user (USER) submits the program of the programming problem 1 - ①, the processor of the programming education system (DOVELET SYSTEM) drives the corresponding answer program to execute the learner process (USER PROCESS). Then, the processor inputs M test data (TEST-1, TEST-2, TEST-3, ..., TEST-M) sequentially or simultaneously to the learner process (USER PROCESS). The learner process USER PROCESS generates M learner's answer data ANS-1, ANS-2, ANS-1, MNS-2 in response to each of the M test data TEST-1, TEST- 3, ..., ANS-M).

When the first learner's answer data ANS-1 is output in response to the first test data TEST-1, the processor outputs the first learner's answer data ANS-1 as the first correct answer data ANSWER-1 To determine whether or not the first correct answer is obtained. Similarly, when the second learner's answer data ANS-2 is output in response to the second test data TEST-2, the processor outputs the second learner answer data ANS-2 as the second correct answer data ANSWER -2) and determines whether or not the second correct answer is obtained. That is, when the mth learner's answer data (ANS-m) is outputted in response to the m-th test data TEST-m, the processor stores the mth learner's answer data (ANS- -m) to determine whether or not the m-th answer is correct. Here, m is a natural number of 1 or more and M or less. If all of the answers from the first correct answer to the M th correct answer are correct, the processor displays the correct answer indication as learner information to the learner (USER).

The number of test data may be different for each programming problem. In other words, a simple programming problem would have a small number of test data, and a complex programming problem would have a large number of test data. As such, the test data needs a sufficient number to be able to characterize the programming problem, and if the test data is insufficient, it can be misleading to determine whether the learner's answer program is the correct answer to the programming problem.

For example, each of from the first learner's answer data ANS-1 to the [M-1] learner's answer data ANS- [M-1] includes the first correct answer data ANSWER- (ANSWER- [M-1]). If the last Mth learner's answer data (ANS-M) does not match the M correct answer data (ANSWER-M) To the learner (USER) as scoring information. As such, you need to have all the test data that can capture the full nature of any programming problem. Some programming problems require test data that can be used to identify specific corner characteristics. Failure to obtain such test data can not result in distinctive scoring. Having enough test data to capture the overall characteristics ensures the reliability of the programming education system.

On the other hand, some programming problems can have multiple correct answers. The plural correcting flags FLAG in FIG. 3 indicate whether or not the programming problem has a plurality of correct answers. Hereinafter, a processing method of a plurality of correct answers will be described with reference to FIG.

5 is a diagram for explaining a scoring method for a programming problem having a plurality of correct answers.

The processor can first check the multiple correct flag (FLAG). When the plural correct answer flags FLAG are set for a certain programming problem, that is, when the plural correct answer flags FLAG indicate a plurality of correct answers, the first learner answer data FLAG in response to the first test data TEST- (ANS-1) is outputted, the processor compares the first learner's answer data (ANS-1) with the correct answer data ANSWER-11 of the correct answer table 1, , Comparison with the correct answer data ANSWER-13 of the correct answer table 3, and comparison with the correct answer data ANSWER-14 of the correct answer table 4 should be performed.

Of course, if the first learner's answer data ANS-1 matches the correct answer data ANSWER-11, the comparison with the plural correct answers data ANSWER-12, the comparison with the plural answer data ANSWER-13, No comparison will be necessary. However, in order to determine that at least the first learner's answer data (ANS-1) is an incorrect answer, the comparison between the first learner's answer data (ANS-1) and the correct answer data ANSWER- The comparison between the first learner's answer data (ANS-1) and the correct answer data ANSWER-13, and the comparison between the first learner's answer data (ANS-1) and the correct answer data ANSWER-14 , And all the results of the comparison should be discordant.

The number of correct answers may be different for each test data. 5, there are four correct data (ANSWER-11, ANSWER-12, ANSWER-13, ANSWER-14) for the first test data and two correct data -22), and there are three correct answers data ANSWER-31, ANSWER-32, and ANSWER-33 for the third test data, and four correct answers data ANSWER-M1 and ANSWER-M2 , ANSWER-M3, ANSWER-M4). In addition to the M correct answer data, N multiple correct answer data are further stored in the storage area of the corresponding programming problem.

Meanwhile, as shown in FIG. 3, the storage area of each programming problem stores the execution time limit (TIME LIMIT) information. The TIME LIMIT is set for each programming problem. The learner process (USER PROCESS) executed from the answer program of the learner (USER) inputs the test data within the corresponding execution time limit (TIME LIMIT) And then output the learner's answer data in response to it. Hereinafter, it will be described in more detail with reference to FIG. 6 and FIG.

6 shows a scoring process according to an embodiment of the present invention.

If a learner (USER) submits an answer program for a certain programming problem, the scoring program in the DOVELET SYSTEM will run the PARENT PROCESS and the PARENT PROCESS will Fork the child process (CHILD PROCESS). The child process CHILD PROCESS inputs the first test data TEST-1 to the learner process USER PROCESS executed from the learner's answer program and sends the first learner's answer data from the learner process USER PROCESS (ANS-1).

The child process CHILD PROCESS compares the first learner's answer data ANS-1 with the first correct answer data ANSWER-1 as shown in FIG. 4 for the first correct answer decision Judge 1 1, ANSWER-12, ANSWER-13, and ANSWER-14, as shown in Fig. 5, when the plural correct answer flags FLAG indicate a plurality of correct answers ). If the first learner's answer data ANS-1 matches any of the first correct answer data ANSWER-1 or the multiple answer data ANSWER-11, ANSWER-12, ANSWER-13, and ANSWER-14, (Child) process (CHILD PROCESS) performs a second correct answer decision (Judge 2) on the second learner's answer data (ANS-2). In this way, all of the learner's answer data (ANS-1, ANS-2,?, ANS-M) are correct answer data (Judge 1) Or the multiple correcting data, respectively, the child process CHILD PROCESS delivers a status value called CORRECT to the parent process. The learner (USER) is provided with the correct answer indication as scoring information.

The scoring information provided to the learner (USER) may further include execution time information in addition to the correct answer indication. In this case, the execution time is a time at which the learner process (USER PROCESS) receives the test data (TEST-1, TEST-2, ..., TEST- (Child process) (CHILD PROCESS) including the time required for the learner process to judge whether the first correct answer is to be judged (Judge1) to the Mth correct answer (JudgeM ) May also be indicated. Alternatively, the total time required for the parent process to finally provide the correct answer indication, including both the time taken by the learner process and the time required for the child process, may be defined as the execution time.

In addition to the results of the answer given by the learner (USER) regarding the programming problem, the learner also provides information on the execution time of the answer program. In addition, among the total learner who submitted the answer program for the programming problem, It is also possible to induce the learner to worry about the coding efficiency by providing the rank of the execution time occupied. For example, it is possible to arrange all of the submitted answer programs for a certain programming problem in a shorter run time, and to show how many times the run-time programs of the answer program they submitted are ranked. In addition to the execution time ranking, it is also possible to provide a coding size ranking of the answer program. The learner can polish his or her efficient coding skills in the process of having his answer program have a relatively shorter execution time and also have a relatively smaller coding size. In addition, the degree of difficulty of the programming problem can be informed by additionally providing the ratio of correct answer programs (correct answer rate) among all answer programs.

On the other hand, in the first correct answer decision Judge 1, the first learner answer data ANS-1 is the first correct answer data ANSWER-1 or the plural answer data ANSWER-11, ANSWER-12, ANSWER-13, ANSWER- -14), the child process (CHILD PROCESS) transfers the state value of the incorrect answer (Wrong-1) to the parent process (PARENT PROCESS), and the second correct answer decision (Judge 2) The process can be terminated without performing the process. That is, when the result of the m-th order correct answer decision is an incorrect answer, it is not necessary to further determine whether or not the answer is equal to or more than the (m + 1) th answer.

However, the present invention is not limited to this example. For example, all of the determination of correct answers may be delayed and the first test data TEST-1 to the M test data TEST- (ANS-1) to the Mth learner's answer data (ANS-M) are first obtained and then the first correct answer decision (Judge1) to the Mth answer correct answer decision ( JudgeM) can be performed. However, if the m-th learner's answer data (ANS-m) does not match the correct answer data, the algorithm for ending the process without further obtaining the (m + 1) It can be considered that the algorithm is more efficient in terms of the system operation than the algorithm of postponing the judgment later and obtaining all the data from the first learner's answer data (ANS-1) to the Mth learner's answer data (ANS-M) first.

When the result of the m-th correct answer determination is an incorrect answer, the scoring information provided by the DOVELET SYSTEM includes additional information beyond a simple error indication. That is, if the m-th learner's answer data ANS-m does not match the m-th correct answer data ANSWER-m and the plural correct answer data, the m-th test data TEST-m M), m-th correct answer data ANSWER-m, and / or m-th learner answer data ANS-m.

The m test data TEST-m, the m correct answer data ANSWER-m, and the m-th learner's answer data ANS-m-1, since the learner USER can hardly find the wrong part in his / m) to the learner (USER) so that it is easy to find out the wrong part of the submitted answer program. When the m-th test data TEST-m is input, the m-th correct answer data ANSWER-m should be outputted. Since the m-th learner answer data (ANS-m) different from the m- It gives instructions to correct the reporting errors. In this way, it is possible to provide a self-directed error correction learning opportunity to a programming learner. According to the embodiment, in the case of an incorrect answer, the m-th learner's answer data (ANS-m) is not provided and only the m-th test data (TEST-m) and the m- Examples are possible.

The time when the learner process USER PROCESS receives the m th test data TEST-m and outputs the m learner's answer data ANS-m exceeds the execution time limit TIME LIMIT or the learner process USER PROCESS ) Receives the M test data and outputs the M learner's answer data exceeds the execution time limit (TIME LIMIT), or the child process (CHILD PROCESS) including the time required for the learner process The time required for performing the first correct answer decision Judge 1 to the M th answer correct answer decision Judge M exceeds the execution time limit TIME LIMIT or the time required for the learner process and the above- If the time it takes for the parent process to finally provide the correct answer indication, including all the time spent in the process, exceeds the execution time limit (TIME LIMIT) Information is provided to the learner (USER).

When the execution time limit (TIME LIMIT) is exceeded, it can be roughly classified into two kinds. First, there is an infinite loop in the learner process (USER PROCESS) due to a fatal error in the answer program submitted by the learner (USER), and the execution time is infinite. Second, there is no error in the answer program submitted by the learner (USER), but it is coded inefficiently and the execution time is longer than the execution time limit (TIME LIMIT). In both cases, it is necessary to remove this abnormal process by forcibly removing the DOVELET SYSTEM because it can cause a failure to operate the DOVELET SYSTEM stably.

7 illustrates a method for forcibly removing an abnormal process.

A programming education system (DOVELET SYSTEM) according to an embodiment of the present invention performs periodic monitoring for checking an abnormal process. In FIG. 7, periodic monitoring is performed every minute. When the periodic monitoring 1 is performed, the identifiers (OBJ1000, OBJ1001, OBJ1003) of all processes executed in the first check timing (PROCESS ID CHECK 1) are checked. Then, the identifiers (OBJ 1004, OBJ 1005) of all the processes executed in the second check timing (PROCESS ID CHECK 2) after a predetermined time (S seconds) elapsed from the first check timing (PROCESS ID CHECK 1) do. Since there is no identifier that matches the identifiers checked in the second check timing (PROCESS ID CHECK 2) among the identifiers checked in the first check timing (PROCESS ID CHECK 1), in the periodic monitoring 1, the abnormal learner process (USER PROCESS) It is determined that there is no abnormal child process (CHILD PROCESS) or abnormally parent process (PARENT PROCESS). Here, the predetermined time (S seconds) should be set to be longer than the longest execution time limit among the execution time limit (TIME LIMIT) of all programming problems.

L minutes have elapsed and periodic monitoring 2 is again performed. Since there is no identifier that matches the identifiers OBJ1009 and OBJ1010 checked in the fourth check timing PROCESS ID CHECK 4 among the identifiers OBJ1007 checked in the third check timing PROCESS ID CHECK 3, It is determined that there is no abnormal learner process (USER PROCESS), abnormal child process (CHILD PROCESS), or abnormal parent process (PARENT PROCESS). In periodic monitoring 3, identifiers (OBJ1013, OBJ1020, OBJ1021) checked in the sixth check timing (PROCESS ID CHECK 6) among the identifiers OBJ1013, OBJ1014 and OBJ1016 checked in the fifth check timing (PROCESS ID CHECK 5) Quot;) < / RTI > corresponding to the process identifier OBJ1013. Since the learner process corresponding to the process identifier OBJ1013 is suspected to be an abnormal process that is continuously executed exceeding the longest execution time limit, it is possible to avoid the abnormal situation by forcibly removing the corresponding learner process (PROCESS KILL).

Although the programming education system according to an embodiment of the present invention has been described with reference to FIGS. 1 to 7, a programming training method according to another embodiment of the present invention will be described with reference to FIGS. 1 to 7 It is possible. A programming education method according to an embodiment can be described as a screen provided to a learner through a screen of a computer or the like.

A programming training method according to another embodiment of the present invention provides a screen showing step-by-step programming problems to a learner (USER) as shown in FIG. For example, the learner USER selects and solves one programming problem among the step-by-step programming problems shown in FIG. 2, and submits his / her answer program through an upload / registration / input button shown on the answer program submission screen .

4, the programming problem selected by the learner US includes M test data TEST-1, TEST-2, TEST-3, ..., TEST-M and M correct answer data ANSWER- ANSWER-2, ANSWER-3, ..., ANSWER-M). In other words, a learner process (USER PROCESS) in which an answer program that is submitted by the learner USER is executed and executed is executed in response to M test data (TEST-1, TEST-2, TEST-3, 1, ANS-2, ANS-3, ..., ANS-M) of the learner's answer data (ANS-1, ANS-2, ANS- ) Match each of the M correct answer data ANSWER-1, ANSWER-2, ANSWER-3, ..., ANSWER-M, the screen including the correct answer indication CORRECT, as shown in FIG. 6, Lt; / RTI > The correct answer display screen can provide execution time information, execution time rank, coding size rank, correct answer rate, and the like for the corresponding programming problem in addition to correct answer display.

If the m-th learner's answer data (ANS-m) does not match the m-th correct answer data (ANSWER-m) in the m-th answer correct answer determination like in the determination method shown in Fig. 6, M) correct answer data ANSWER-m, and / or m-th learner's answer data ANS-m to the learner. Here, m is a natural number of 1 or more and M or less. The learner who has confirmed the incorrect answer display screen refers to the m test data TEST-m, the m correct answer data ANSWER-m, and / or the mth learner answer data ANS-m, Can be easily found.

On the other hand, in the case where the plural correct answer flags FLAG shown in FIG. 3 indicate a plurality of correct answers, that is, when the multiple correct answer flags FLAG are set as shown in FIG. 5, The mth learner's answer data (ANS-m) does not match the m correct answer data (ANSWER-m1) and the mth learner's answer data (ANS-m) does not match the corresponding plural correct answers data ANSWER-m2, ANSWER- ), The learner is provided with a screen including an incorrect answer display.

As shown in FIG. 3, an execution time limit (TIME LIMIT) is set for each programming problem. If the execution time of the learner process for any programming problem exceeds the execution time limit (TIME LIMIT) The learner is provided with an incorrect answer display screen. Here, the execution time of the learner process is a time at which the learner process USER PROCESS receives the mth test data TEST-m and outputs the m learner's answer data ANS-m or the learner process USER PROCESS It may mean the time for receiving M test data and outputting M learner's answer data. Alternatively, the execution time of the learner process includes the time taken by the learner process in such a narrow sense, and the child process (CHILD PROCESS) in FIG. 6 judges whether or not the first correct answer decision (Judge1) (JudgeM), or the time it takes for the parent process to finally provide the correct answer indication, including both the time taken by the learner process in a narrow sense and the time taken by the child process It can mean.

If the execution time is infinite due to a fatal error in the answer program submitted by the learner (USER) or an infinite loop, or if the answer program written by the learner (USER) is coded inefficiently and the execution time is limited by the execution time limit ), It is necessary to take measures to forcibly remove such an abnormal process as illustrated in Fig. The identifier of the learner process checked in the first check timing (for example, PROCESS ID CHECK 5 in Fig. 7) (for example, OBJ1013 in Fig. 7) is checked at the second check timing (for example, PROCESS ID CHECK 6 in Fig. 7) (E.g., OBJ1013 in FIG. 7) is forcibly removed / terminated, and the learner may be provided with a wrong answer display screen including a timeout or a program error indication if the identifier matches the identifier of the checked learner process .

The embodiments of the present invention are not limited to the above-described system or method, but may be implemented by a program that realizes a function corresponding to the technical configuration or a recording medium on which the program is recorded. Although the embodiments of the present invention have been described in detail, it is to be understood that the scope of the present invention is not limited to the above embodiments but may be modified and changed without departing from the spirit and scope of the present invention. And are included in the scope of the present invention.

USER: Learners
DOVELET SYSTEM: Programming Education System
TEST-1 to TEST-M: Test data
ANS-1 ~ ANS-M: Learner's answer data
ANSWER-1 ~ ANSWER-M: Correct answer data
TIME LIMIT: execution time limit
FLAG: Multiple correct flag

Claims (12)

Step programming problems, a memory for storing M test data for a certain programming problem (where M is a natural number), and M correct data corresponding to the M test data; And
The learner process is executed by driving an answer program to be submitted by the learner with respect to the programming problem, the learner process data is inputted to the learner process to obtain learner's answer data, the learner's answer data is compared with the correct answer data, And a processor for providing the learner,
Wherein the processor provides the m test data and the m correct answer data to the learner when the mth learner's answer data (where m is a natural number equal to or greater than 1 and equal to or less than M) does not match the m correct answer data,
The processor performs periodic monitoring to check the identifier of the learner process in progress,
Wherein the processor forcibly removes the matching learner process when the identifier of the learner process checked at the first check timing coincides with the identifier of the learner process checked at the second check timing. delete delete delete delete delete delete delete Providing a screen showing step-by-step programming problems;
Providing a screen for receiving a learner's answer program for any programming problem evaluated by M test data (where M is a natural number) and M correct answer data; And
And inputting the test data into a learner process executed by running the answer program to obtain learner's answer data and comparing the learner's answer data with the correct answer data to provide a screen for showing the score information to the learner ,
When the identifier of the learner process checked at the first check timing coincides with the identifier of the learner process checked at the second check timing, the learner is provided with an error display screen indicating a program error . 10. The method of claim 9,
The correct answer display screen is provided when each of the M learner answer data coincides with each of M correct answer data,
And provides the incorrect answer display screen including the mth test data and the m correct answer data if the mth learner's answer data (where m is a natural number of 1 or more and M or less) does not match the m correct answer data. How to train. 10. The method of claim 9,
When a plurality of correct answer flags are set for the programming problem,
If the m-th learner's answer data (where m is a natural number equal to or greater than 1 and equal to or less than M) does not match the m-th correct answer data and the m-th learner answer data does not match the corresponding multiple answer data, The method comprising: 10. The method of claim 9,
And providing an incorrect answer display screen including an overtime indication if the execution time of the learner process for the programming problem exceeds the execution time limit of the programming problem.

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