README.md

283. Move Zeroes

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

Example:

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

Note:

1. You must do this in-place without making a copy of the array.
2. Minimize the total number of operations.

Solutions (Rust)

1. Two Pointers

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

2. One Pointer

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