Class BubbleSort

2_Basic Sorting/BubbleSort.java:5–61

//Problem : Bubble Sort

public class BubbleSort {
    public static void bubbleSort(int arr[]) {
        for(int turn=0; turn<arr.length-1; turn++) {
            for(int j=0; j<arr.length-1-turn; j++) {
                if(arr[j] > arr[j+1]) {
                    //swap
                    int temp = arr[j];
                    arr[j] = arr[j+1];
                    arr[j+1] = temp;
                }
            }
        }
    }

    public static void modifiedBubbleSort(int arr[]) {
        for(int turn=0; turn<arr.length-1; turn++) {
            boolean swapped = false;
            for(int j=0; j<arr.length-1-turn; j++) {
                if(arr[j] > arr[j+1]) {
                    //swap
                    int temp = arr[j];
                    arr[j] = arr[j+1];
                    arr[j+1] = temp;
                    swapped = true;
                }
            }
            if(swapped == false) {
                break;
            }
        }
    }

    public static void bubbleSortDescending(int arr[]) {
        for(int turn=0; turn<arr.length-1; turn++) {
            for(int j=0; j<arr.length-1-turn; j++) {
                if(arr[j] < arr[j+1]) {
                    //swap
                    int temp = arr[j];
                    arr[j] = arr[j+1];
                    arr[j+1] = temp;
                }
            }
        }
    }

    public static void printArr(int arr[]) {
        for(int i=0; i<arr.length; i++) {
            System.out.print(arr[i]+" ");
        }
        System.out.println();
    }
    public static void main(String args[]) {
        int arr[] = {5, 4, 3, 2, 1};
        bubbleSortDescending(arr);
        printArr(arr);
    }
}