随笔分类 - LeetCode
摘要：Given a number , return a string consisting of s and s that represents its value in base (negative two). The returned string must have no leading zero
阅读全文
摘要：Given a binary string (a string consisting only of '0' and '1's) and a positive integer , return true if and only if for every integer X from 1 to N,
阅读全文
摘要：Given a positive integer , you need to find the length of the smallest positive integer such that is divisible by , and only contains the digit . Retu
阅读全文
摘要：Given an array of positive integers, represents the value of the th sightseeing spot, and two sightseeing spots and have distance between them. The sc
阅读全文
摘要：Given an array of integers , return if we can partition the array into three non empty parts with equal sums. Formally, we can partition the array if
阅读全文
摘要：Given a positive integer , return the number of positive integers less than or equal to that have at least 1 repeated digit. Example 1: Input: 20 Outp
阅读全文
摘要：A conveyor belt has packages that must be shipped from one port to another within D days. The ith package on the conveyor belt has a weight of weights
阅读全文
摘要：You are given a list of songs where the ith song has a duration of seconds. Return the number of pairs of songs for which their total duration in seco
阅读全文
摘要：Every non negative integer has a binary representation. For example, can be represented as in binary, as in binary, and so on. Note that except for ,
阅读全文
摘要：Return the root node of a binary search tree that matches the given traversal. (Recall that a binary search tree is a binary tree where for every node
阅读全文
摘要：In a row of dominoes, and represent the top and bottom halves of the domino. (A domino is a tile with two numbers from 1 to 6 one on each half of the
阅读全文
摘要：Normally, the factorial of a positive integer is the product of all positive integers less than or equal to . For example, . We instead make a clumsy
阅读全文
摘要：Given an array of integers, we must modify the array in the following way: we choose an and replace with , and we repeat this process times in total.
阅读全文
摘要：Given an array of 0s and 1s, we may change up to values from 0 to 1. Return the length of the longest (contiguous) subarray that contains only 1s. Exa
阅读全文
摘要：Given a string , determine if it is valid. A string is valid if, starting with an empty string , you can transform into after performing the following
阅读全文
摘要：Given an array of strings made only from lowercase letters, return a list of all characters that show up in all strings within the list (including dup
阅读全文
摘要：You are given a grid of size N x N, and each cell of this grid has a lamp that is initially turned off. You are also given an array of lamp positions
阅读全文
摘要：On an 8 x 8 chessboard, there is one white rook. There also may be empty squares, white bishops, and black pawns. These are given as characters 'R', '
阅读全文
摘要：We are given the node of a maximum tree: a tree where every node has a value greater than any other value in its subtree. Just as in the "previous pro
阅读全文
摘要：In a town, there are people labelled from to . There is a rumor that one of these people is secretly the town judge. If the town judge exists, then: 1
阅读全文
