🌵27. Remove Element
https://leetcode.com/problems/remove-element/
js
/**
* @param {number[]} nums
* @param {number} val
* @return {number}
*/
var removeElement = function(nums, val) {
var left = 0
var right = nums.length - 1
while (left <= right) {
if (nums[left] === val) {
nums[left] = nums[right]
right--
} else {
left++
}
}
return right + 1
}py
class Solution(object):
def removeElement(self, nums, val):
"""
:type nums: List[int]
:type val: int
:rtype: int
"""
left, right = 0, len(nums) - 1
while left <= right:
if nums[left] == val:
nums[left] = nums[right]
right -= 1
else:
left += 1
return right + 1