Create BubbleSort.java (#918)

Author: Chandra-Sekhar-Bala

Java/Algorithm/SortingAlgorithm/BubbleSort.java

@@ -0,0 +1,31 @@
+import java.util.Arrays;
+
+class BubbleSort{
+
+    public static void main(String [] kichu){
+        int [] arr = {7,6,5,3,4,2,1};
+        Bubble_Sort(arr);
+        System.out.println(Arrays.toString(arr));
+        
+    }
+
+    /*
+    1. Bubble Sort
+    At every step comparing adjacent elements
+    At the end of the compare and swaping the largest element will be at the end.  */
+    static void Bubble_Sort(int [] arr){
+        int n = arr.length - 1;
+        boolean isAsc;
+        
+        for(int i = 0; i < n; ++i){
+            isAsc = false;
+            for(int j = 1; j < n-i; ++j){
+                if(arr[j] < arr[j-1]){
+                    swap(arr,j,j-1);
+                    isAsc = true;
+                }
+            }
+            // if no greater element found in the entire array means it is sorted
+            if(!isAsc) return;
+        }
+    }