Update bubble_sort.cpp

sorting/bubble_sort.cpp

@@ -1,32 +1,41 @@
-//complexity = O(n^2)
+// C program for implementation of Bubble sort
 #include <stdio.h>
-int main()
+
+void swap(int *xp, int *yp)
+{
+    int temp = *xp;
+    *xp = *yp;
+    *yp = temp;
+}
+
+// A function to implement bubble sort
+void bubbleSort(int arr[], int n)
 {
-int n; 
-scanf("%d",&n);
-int arr[n]; 
-int i;
-
-for(i=0;i<n;i++){
-scanf("%d",&arr[i]);
+   int i, j;
+   for (i = 0; i < n-1; i++)      
+
+       // Last i elements are already in place   
+       for (j = 0; j < n-i-1; j++) 
+           if (arr[j] > arr[j+1])
+              swap(&arr[j], &arr[j+1]);
 }
-
-int j,k,count=0;
-for(j=0;j<n-1;j++){
-	for(k=0;k<n-j-1;k++){
-		if(arr[k]>arr[k+1]){
-			int temp,a;
-			temp=arr[k];
-			arr[k]=arr[k+1];
-			arr[k+1]=temp;
-			count++;
-		}
-	}
+
+/* Function to print an array */
+void printArray(int arr[], int size)
+{
+    int i;
+    for (i=0; i < size; i++)
+        printf("%d ", arr[i]);
+    printf("n");
 }
-for(i=0;i<n;i++){
-	printf("%d, ",arr[i]);
+
+// Driver program to test above functions
+int main()
+{
+    int arr[] = {64, 34, 25, 12, 22, 11, 90};
+    int n = sizeof(arr)/sizeof(arr[0]);
+    bubbleSort(arr, n);
+    printf("Sorted array: \n");
+    printArray(arr, n);
+    return 0;
 }
-printf("\nThe total number of swaps are %d\n",count);
-
-return 0;
-}