数组移位

#include <stdio.h>int main(){int n;scanf("%d",&n);int f = 0;int a[n];int b[n][n];for(int i=0;i<n;++i)scanf("%d",&a[i]);for(int i=0;i<n;++i){for(int j=0;j<n;++j){b[i][j] = a[(f+j)%n];printf("%2d",b[i][j]);}f=(--f+n)%n;printf("\n");}return 0;}