Idiot-maker

摘要： https://oj.leetcode.com/problems/single-number/Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your al... 阅读全文

摘要： https://oj.leetcode.com/problems/maximum-depth-of-binary-tree/ Given a binary tree, find its maximum depth. The maximum depth is the number of nodes a 阅读全文

摘要： https://oj.leetcode.com/problems/same-tree/ Given two binary trees, write a function to check if they are equal or not. Two binary trees are considere 阅读全文

摘要： https://oj.leetcode.com/problems/excel-sheet-column-number/Related to questionExcel Sheet Column TitleGiven a column title as appear in an Excel sheet... 阅读全文

摘要： https://oj.leetcode.com/problems/linked-list-cycle/ Given a linked list, determine if it has a cycle in it. Follow up:Can you solve it without using e 阅读全文