Wiki Bit manipulation is the act of algorithmically manipulating bits or...

概念 什么是快排？ 快速排序由C. A. R. Hoare在1962年提出。它的基本思想是：通过一趟排序将要排序的数据分割成独立的两部分，其中一...

Given n points on a 2D plane, find the maximum number of points that lie...

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

Three similar questions. Given an array of integers, find if the array c...

Given a string, find the length of the longest substring T that contains...

Given a string, find the length of the longest substring T that contains...

Given a string, find the length of the longest substring without repeati...

Given *n *non-negative integers representing the histogram's bar height ...