GFG SHUFFLE ARRAY

#include<bits/stdc++.h>
#include <stdlib.h>
#include <time.h>

using namespace std;
 
void swap (int *a, int *b) {
    int temp = *a;
    *a = *b;
    *b = temp;
}

void printArray (int arr[], int n) {
    for (int i = 0; i < n; i++)
        cout << arr[i] << " ";
    cout << "\n";
}

void randomize (int arr[], int n) {
    srand (time(NULL));
    for (int i = n - 1; i > 0; i--) {
        int j = rand() % (i + 1);
        swap(&arr[i], &arr[j]);
    }
}

int main() {
    int arr[] = {1, 2, 3, 4, 5, 6, 7, 8};
    int n = sizeof(arr) / sizeof(arr[0]);
    randomize (arr, n);
    printArray(arr, n);
    return 0;
}