Method sort

Java/Leetcode/Leetcode287.java:13–24

(int[] arr)

    }

    static void sort(int[] arr){
        int i=0;
        while(i<arr.length){
            int correctIndex=arr[i]-1;
            if(arr[i]!=arr[correctIndex]){
                swap(arr,i,correctIndex);
            }
            else {
                i++;
            }
        }
    }


    static void swap(int[] arr, int a, int b){