public class InsertionSort { public static void insertionSort(int[] arr) { for (int i = 1; i < arr.length; i++) { int key = arr[i]; int j = i - 1; while (j >= 0 && arr[j] > key) { arr[j + 1] = arr[j]; j--; } arr[j + 1] = key; } } public static void main(String[] args) { int[] data = {12, 11, 13, 5, 6}; insertionSort(data); for (int num : data) System.out.print(num + " "); } }