Answer
//Class to test the bubble sort
public class BubbleSortTest{
//Method to sort the array using bubbleSort
//Takes the array to be sorted as argument
public static int[] bubbleSort(int[] arr) {
//Create an integer to hold the length of the array
int n = arr.length;
//Create a temporary variable to hold the values of the
//array
//for swapping purposes. Initialize it to zero
int temp = 0;
//Cycle through the array element by element
for(int i = 0; i < n; i++){
//For each element
for(int j = 1; j < (n-i); j++){
//if the element is greater than the element after it
if(arr[j-1] > arr[j]){
//swap the elements
temp = arr[j-1];
arr[j-1] = arr[j];
arr[j] = temp;
} //End of if
} //End of inner for
} //End of outer for
//return the sorted array
return arr;
}
//main method
public static void main(String [] args){
//create a sample array
int [] myArray = {56, 23, 7, 4, 6};
//Call the bubbleSort() method to sort the array
int [] sortedArray = bubbleSort(myArray);
//Print out the sorted array
for(int i = 0; i < sortedArray.length; i++){
System.out.print(sortedArray[i] + " ");
}
} //End of main method
} //End of class BubbleSortTest
Sample Output
4 6 7 23 56
Step-by-step explanation:
The code above has been written in Java and it contains comments explaining necessary parts of the code. Please go through the comments. A sample output has also been provided.
For clarity, the following shows the actual function alone without using or including it in a class.
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//Method to sort the array using bubbleSort
//Takes the array to be sorted as argument
public static int[] bubbleSort(int[] arr) {
//Create an integer to hold the length of the array
int n = arr.length;
//Create a temporary variable to hold the values of the array
//for swapping purposes. Initialize it to zero
int temp = 0;
//Cycle through the array element by element
for(int i = 0; i < n; i++){
//For each element
for(int j = 1; j < (n-i); j++){
//if the element is greater than the element after it
if(arr[j-1] > arr[j]){
//swap the elements
temp = arr[j-1];
arr[j-1] = arr[j];
arr[j] = temp;
}
}
}
//return the sorted array
return arr;
}
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