﻿ Java - Move every zero to the right side of a array

# Java: Move every zero to the right side of a given array of integers

## Java Basic: Exercise-167 with Solution

Write a Java program to move every zero to the right side of a given array of integers.

Visual Presentation:

Sample Solution:

Java Code:

``````// Importing the required Java utilities package
import java.util.*;

// Defining a class named Solution
public class Solution {

// Method to move all zeros in the array to the end
public static int[] move_zero(int[] nums) {
// Checking if the input array is null
if (nums == null) {
throw new IllegalArgumentException("Null array!"); // Throwing an exception for a null array
}

boolean swap = true; // Initializing a boolean variable to track swapping operations

// Loop to move zeros to the end of the array
while (swap) {
swap = false; // Resetting the swap flag for each iteration

// Iterating through the array elements
for (int i = 0; i < nums.length - 1; i++) {
// Swapping non-zero elements with zeros to move zeros towards the end
if (nums[i] == 0 && nums[i + 1] != 0) {
swap(nums, i, i + 1); // Calling the swap method to perform the swap operation
swap = true; // Setting the swap flag to true after performing a swap
}
}
}

return nums; // Returning the modified array
}

// Private method to swap elements in the array
private static void swap(int[] nums, int a, int b) {
int temp = nums[a]; // Storing the value of nums[a] in a temporary variable
nums[a] = nums[b]; // Assigning the value of nums[b] to nums[a]
nums[b] = temp; // Assigning the value stored in the temporary variable to nums[b]
}

// The main method of the program
public static void main(String[] args) {
int[] nums = {0, 3, 4, 0, 1, 2, 5, 0}; // Initializing an array with integers

// Displaying the original array
System.out.println("\nOriginal array: " + Arrays.toString(nums));

// Calling the move_zero method to move zeros to the end of the array
int[] result = move_zero(nums);

// Displaying the resulting array after moving zeros to the end
System.out.println("\nResult: " + Arrays.toString(result));
}
}
```
```

Sample Output:

```Original array: [0, 3, 4, 0, 1, 2, 5, 0]

Result: [3, 4, 1, 2, 5, 0, 0, 0]
```

Flowchart:

Java Code Editor: