README_EN.md

283. Move Zeroes

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Description

Given an integer array nums, move all 0's to the end of it while maintaining the relative order of the non-zero elements.

Note that you must do this in-place without making a copy of the array.

 

Example 1:

Input: nums = [0,1,0,3,12]
Output: [1,3,12,0,0]

Example 2:

Input: nums = [0]
Output: [0]

 

Constraints:

• 1 <= nums.length <= 104
• -231 <= nums[i] <= 231 - 1

 

Follow up: Could you minimize the total number of operations done?

Solutions

Python3

class Solution:
    def moveZeroes(self, nums: List[int]) -> None:
        i = -1
        for j, x in enumerate(nums):
            if x:
                i += 1
                nums[i], nums[j] = nums[j], nums[i]

Java

class Solution {
    public void moveZeroes(int[] nums) {
        int i = -1, n = nums.length;
        for (int j = 0; j < n; ++j) {
            if (nums[j] != 0) {
                int t = nums[++i];
                nums[i] = nums[j];
                nums[j] = t;
            }
        }
    }
}

C++

class Solution {
public:
    void moveZeroes(vector<int>& nums) {
        int i = -1, n = nums.size();
        for (int j = 0; j < n; ++j) {
            if (nums[j]) {
                swap(nums[++i], nums[j]);
            }
        }
    }
};

Go

func moveZeroes(nums []int) {
	i := -1
	for j, x := range nums {
		if x != 0 {
			i++
			nums[i], nums[j] = nums[j], nums[i]
		}
	}
}

JavaScript

/**
 * @param {number[]} nums
 * @return {void} Do not return anything, modify nums in-place instead.
 */
var moveZeroes = function (nums) {
    let i = -1;
    for (let j = 0; j < nums.length; ++j) {
        if (nums[j]) {
            const t = nums[++i];
            nums[i] = nums[j];
            nums[j] = t;
        }
    }
};

TypeScript

/**
 Do not return anything, modify nums in-place instead.
 */
function moveZeroes(nums: number[]): void {
    const n = nums.length;
    let i = 0;
    for (let j = 0; j < n; j++) {
        if (nums[j]) {
            if (j > i) {
                [nums[i], nums[j]] = [nums[j], 0];
            }
            i++;
        }
    }
}

Rust

impl Solution {
    pub fn move_zeroes(nums: &mut Vec<i32>) {
        let mut i = 0;
        for j in 0..nums.len() {
            if nums[j] != 0 {
                if j > i {
                    nums[i] = nums[j];
                    nums[j] = 0;
                }
                i += 1;
            }
        }
    }
}

C

void moveZeroes(int* nums, int numsSize) {
    int i = 0;
    for (int j = 0; j < numsSize; j++) {
        if (nums[j] != 0) {
            if (j > i) {
                nums[i] = nums[j];
                nums[j] = 0;
            }
            i++;
        }
    }
}

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