Question

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

Answer 1

#include <iostream>

int main() {
    int arr[] = {4, 7, 2, 9, 3};
    int arr_size = sizeof(arr)/sizeof(arr[0]);
 
    int first = arr[0];
 
    for (int i = 0; i < arr_size - 1; i++) {
        arr[i] = arr[i + 1];
    }

    arr[arr_size - 1] = first;
     
    for (int i = 0; i < arr_size; i++) {
        std::cout << arr[i] << " ";
    }
}


 
 
/*
run:
 
7 2 9 3 4 
 
*/

 

70+ SQL courses for beginners and professionals