随笔分类 -  算法：leetcode

摘要：题目：Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.For example, g... 阅读全文

摘要：题目：Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to 4 / \ 7 2 / \ / \9 6 3 1Trivia:This problem was inspired byt... 阅读全文

摘要：题目：Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the ... 阅读全文

摘要：题目：Given a non-negative integer num, repeatedly add all its digits until the result has only one digit.For example:Given num = 38, the process is like... 阅读全文

摘要：题目：Given a binary tree, find its maximum depth.The maximum depth is the number of nodes along the longest path from the root node down to the farthest... 阅读全文

摘要：题目：Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.Supposed the linked list is 1 -> 2 -> 3... 阅读全文