学校布置的题，c语言好难懂

Question

问题:生成如下的循环方阵，每行向左循环移动1位；
0 1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 0
2 3 4 5 6 7 8 9 0 1
3 4 5 6 7 8 9 0 1 2
4 5 6 7 8 9 0 1 2 3
5 6 7 8 9 0 1 2 3 4
6 7 8 9 0 1 2 3 4 5
7 8 9 0 1 2 3 4 5 6
8 9 0 1 2 3 4 5 6 7
9 0 1 2 3 4 5 6 7 8

Answer 1

#include <stdio.h>
int main() {
    int arr[10] = { 0,1,2,3,4,5,6,7,8,9 };
    for (int i = 0; i < 10; i++) {
        for (int j = 0; j < 10; j++) {
            printf("%d ", arr[j]);
        }
        printf("\n");
        for (int j = 0; j < 9; j++) {
            int tmp = arr[j];
            arr[j] = arr[j + 1];
            arr[j + 1] = tmp;
        }
    }
    return 0;
}

#include <stdio.h>
int main() {
    int arr[10] = { 0,1,2,3,4,5,6,7,8,9 };
    for (int i = 0; i < 10; i++) {
        for (int j = i; j < 10 + i; j++) {
            printf("%d ", arr[j % 10]);
        }
        printf("\n");
    }
    return 0;
}