https://oj.leetcode.com/problems/reorder-list/ 思路:分三步走 从中间把链表分开(双指针法) 把后面的链表反序 合并两个链表 publicclassSolution {publicvoidreorderList(ListNode head) {if(head ==null|| head.next ==null|| head.next.next ==null)return; ListNode slow=head; ListNode fast=head;whi...
Solve coding problems from LeetCode with various data structures and algorithms algorithmsleetcodedata-structures UpdatedFeb 24, 2025 JavaScript Must-do List for Interview Prep golangleetcodeleetcode-solutionsleetcode-golangleetcode-gotop-150
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给定一个仅包含数字 2-9 的字符串，返回所有它能表示的字母组合。
class Solution: def moveZeroes(self, nums: List[int]) -> None: n = len(nums) left = right = 0 while right < n: if nums[right] != 0: nums[left], nums[right] = nums[right], nums[left] left += 1 right += 1 作者:力扣官方题解链接:https://leetcode.cn/problems/move-zeroes...
construct a while loop with 2 pointers and if you see odd numbers in sequence keep moving the tail ptr till you see an even and once the tail reaches an even swap the lead and the tail ptrs and move the lead ptr up by 1 and do this until you reach the end ...
git config --global user.name userName git config --global user.email userEmail 分支1 标签0 贡献代码 同步代码 Zhou YuXiadd LICENSE.b381a784年前 31 次提交 提交取消 提示:由于 Git 不支持空文件夾,创建文件夹后会生成空的 .keep 文件 19. 删除链表的倒数第N个节点 ...
It must NOT contain three repeating characters in a row (“…aaa…” is weak, but “…aa…a…” is strong, assuming other conditions are met). Write a function strongPasswordChecker(s), that takes a string s as input, and return the MINIMUM change required to make s a strong pas...
Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or xxx-xxx-xxxx. (x means a di...
You must do this in-place without making a copy of the array. Minimize the total number of operations. 【解答】这个问题比较简单,swap 大法就好了。从前往后,双指针,一个(left)只在发生交换以后才前进,另一个(right)指向待考察元素,每次都单步加一往后走。当 right 指向的数不为零的时候,就让它和...