【LeetCode 面试经典150题】27. Remove Element 移除元素

27. Remove Element

题目描述

Given an integer array nums and an integer val, remove all occurrences of val in nums in-place. The order of the elements may be changed. Then return the number of elements in nums which are not equal to val.

Consider the number of elements in nums which are not equal to val be k, to get accepted, you need to do the following things:

• Change the array nums such that the first k elements of nums contain the elements which are not equal to val. The remaining elements of nums are not important as well as the size of nums.
• Return k.

中文释义

给定一个整数数组 nums 和一个整数 val，就地移除 nums 中所有等于