Method swap

Lecture 42 Quick Sort/src/Main.java:7–11

(int[] arr, int x, int y)

        }
    }
    static void swap(int[] arr, int x, int y){
        int temp = arr[x];
        arr[x] = arr[y];
        arr[y] = temp;
    }
    static int partition(int[] arr, int st, int end){
        int pivot = arr[st];
        int cnt = 0;