Problem You are given two non-empty linked lists representing two non-ne...

Problem Implement next permutation, which rearranges numbers into the le...

Problem The count-and-say sequence is the sequence of integers with the ...

因为很多数学问题，往往没有或者很难计算解析，这时候便需要通过数值计算来求解近似值.概率算法依照概率统计的思路来求解问题，其往往不能得到问题的精确...

Problem Write an algorithm to determine if a number is "happy". A happy ...

Problem Given an m * n matrix M initialized with all 0's and several upd...

Problem Given a Binary Search Tree and a target number, return true if t...

Problem Design a stack that supports push, pop, top, and retrieving the ...

Problem Given an array of integers and an integer k, you need to find th...