hgpenglin的博客

  题目：     N cars are going to the same destination along a one lane road.  The destination is target miles away. Each car i has a constant speed speed[i] (in miles per hour), and initial position...

题目： You have a list of words and a pattern, and you want to know which words in words matches the pattern. A word matches the pattern if there exists a permutation of letters p so that after replaci...

题目： A zero-indexed array A of length N contains all integers from 0 to N-1. Find and return the longest length of set S, where S[i] = {A[i], A[A[i]], A[A[A[i]]], ... } subjected to the rule below. S...

题目： You need to find the largest value in each row of a binary tree. Example: Input: 1 / \ 3 2 / \ \ 5 3 9 Output: [1, 3, 9]  题意是输入一个二叉树，找出二...