Leetcode Move Zeroes

Source: Internet
Author: User

Given an array nums , write a function to move all's to the 0 end of it while maintaining the relative order of the No N-zero elements.

For example, given nums = [0, 1, 0, 3, 12] , after calling your function, nums should is [1, 3, 12, 0, 0] .

Note:

    1. You must does this in-place without making a copy of the array.
    2. Minimize The total number of operations.
Problem Solving Ideas:

Topics can be solved within O (n) Time complexity

Algorithm steps: x = i y = j

Use two "pointers" X and y, initial order y = 0

Use X to iterate through the array nums:

If NUMS[X] is not 0, then Exchange Nums[x] and Nums[y], and make y+1

Simple analysis of the algorithm:

The Y pointer points to the location where the first 0 elements may exist

During traversal, the algorithm ensures that elements in the [Y, X] range are 0

Java Code

 Public void movezeroes (int[] nums) {        int i = 0, j = 0;          for (i = 0; i< nums.length; i++) {            if(nums[i]! = 0)                {if(j! = i) {                     = nums[i];                     = 0;                }                J+ +;}}}    

Reference:

1. http://bookshadow.com/weblog/2015/09/19/leetcode-move-zeroes/

2. Https://leetcode.com/discuss/59543/move-zeros-solution-in-java

Leetcode Move Zeroes

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