Given a blacklist B containing unique integers from [0, N), write a function to ret…

Self Dividing Numbers 请访问最新更新版本：https://yanjia.me/zh/2018/11/… A self-dividing number is a number that i…

题目 Given an arbitrary ransom note string and another string containing letters from all the magazines, write a…

一、题目 罗马数字包含以下七种字符： I， V， X， L，C，D 和 M。 字符 数值 I 1 V 5 X 10 L 50 C 100 D 500 M 1000 例如， 罗马数字 2 写做 II ，即为两个并列的 1。…

You have 4 cards each containing a number from 1 to 9. You need to judge whether they could operated through *…

题目 Given an integer array, find three numbers whose product is maximum and output the maximum product. Example…

Given a binary tree, find the maximum path sum from root. The path may end at any node in the tree and contain…

Related to question Excel Sheet Column Title Given a column title as appear in an Excel sheet, return its corr…

/* 243. Shortest Word Distance Total Accepted: 10375 Total Submissions: 22370 Difficulty: Easy Given a list of…

  Design a HashMap without using any built-in hash table libraries. To be specific, your design shou…

Matchsticks to Square Remember the story of Little Match Girl? By now, you know exactly what matchsticks the l…

Given n non-negative integers representing an elevation map where the width of each bar is 1, comput…