27. Remove Element
Given an array nums and a value val, remove all instances of that value in-place and return the new length.
Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.
The order of elements can be changed. It doesn‘t matter what you leave beyond the new length.
Example 1:
Given nums = [3,2,2,3], val = 3, Your function should return length = 2, with the first two elements of nums being 2. It doesn‘t matter what you leave beyond the returned length.
Example 2:
Given nums = [0,1,2,2,3,0,4,2], val = 2, Your function should return length =5
, with the first five elements ofnums
containing0
,1
,3
,0
, and 4. Note that the order of those five elements can be arbitrary. It doesn‘t matter what values are set beyond the returned length.题意:给定一个数字数组和目标值,将数组中所有与目标值相等的项删除,返回操作后数组的长度代码如下:
var removeElement = function(nums, val) { var len=nums.length; for(var i=0;i<len;i++){ if(nums[i]===val){ nums.splice(i,1); len--; i--; } } return nums.length };
原文地址:https://www.cnblogs.com/xingguozhiming/p/10392820.html
时间: 2024-10-07 01:12:57