随笔分类 - algorithm
摘要：Given a string, your task is to count how many palindromic substrings in this string. The substrings with different start indexes or end indexes are c
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摘要：Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note:You may assume that nums1 has enough space (size tha
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摘要：Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), determine if a person could attend all mee
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摘要：Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacen
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摘要：Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have ex
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摘要：Given a list accounts, each element accounts[i] is a list of strings, where the first element accounts[i][0] is a name, and the rest of the elements a
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摘要：You are given a m x n 2D grid initialized with these three possible values. Fill each empty room with the distance to its nearest gate. If it is impos
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摘要：You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols + and -. For each integer, you should choose o
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摘要：Given a list of non-negative numbers and a target integer k, write a function to check if the array has a continuous subarray of size at least 2 that
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摘要：Given a non-negative integer, you could swap two digits at most once to get the maximum valued number. Return the maximum valued number you could get.
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摘要：Given a binary search tree and a node in it, find the in-order successor of that node in the BST. Note: If the given node has no in-order successor in
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摘要：Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each funct
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摘要：Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Example 2: Note:
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摘要：Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Pan
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摘要：Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longestpath betwee
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摘要：Suppose you are at a party with n people (labeled from 0 to n - 1) and among them, there may exist one celebrity. The definition of a celebrity is tha
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摘要：The API: int read4(char *buf) reads 4 characters at a time from a file. The return value is the actual number of characters read. For example, it retu
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摘要：Given two sparse matrices A and B, return the result of AB. You may assume that A's column number is equal to B's row number. Example:
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摘要：Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), find the minimum number of conference room
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摘要：Given two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100".
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