Question

How to cyclically rotate the elements of int array right by one in C

Answer 1

#include<stdio.h>

int main() {
    int arr[] = {4, 7, 2, 9, 3};
    int arr_size = sizeof(arr)/sizeof(arr[0]);

    int last = arr[arr_size - 1];

    for(int i = arr_size - 1; i > 0; i--) {
        arr[i] = arr[i - 1];
    }
    arr[0] = last;
    
    for (int i = 0; i < arr_size; i++) {
        printf("%i ", arr[i]);
    }
}


/*
run:

3 4 7 2 9 

*/

 

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