Road to Glory

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[LeetCode] 958. Check Completeness of a Binary Tree

• linspiration   2019-01-14 发布
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Definition of a complete binary tree from Wikipedia:In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possibl...

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[LeetCode] 223. Rectangle Area

• linspiration   2019-01-14 发布
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Find the total area covered by two rectilinear rectangles in a 2D plane.

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[LeetCode] 448. Find All Numbers Disappeared in an Array

• linspiration   2019-01-14 发布
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Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once.

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[LeetCode] 442. Find All Duplicates in an Array

• linspiration   2019-01-14 发布
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Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once.

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[LeetCode] 328. Odd Even Linked List

• linspiration   2019-01-14 发布
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Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number and not the value in the nodes.

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[LeetCode] 937. Reorder Log Files

• linspiration   2019-01-14 发布
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You have an array of logs. Each log is a space delimited string of words.

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[LeetCode] 84. Largest Rectangle in Histogram

• linspiration   2019-01-14 发布
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Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram.

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[LeetCode] 287. Find the Duplicate Number

• linspiration   2019-01-14 发布
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Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. Assume that there is only one duplicate number,...

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[LeetCode] 165. Compare Version Numbers

• linspiration   2019-01-14 发布
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Compare two version numbers version1 and version2.If version1 > version2 return 1; if version1 < version2 return -1;otherwise return 0.

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[LeetCode] 545. Boundary of Binary Tree

• linspiration   2019-01-14 发布
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Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves, and right boundary in order without duplicate nodes.

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[LeetCode] 59. Spiral Matrix II

• linspiration   2019-01-14 发布
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Given a positive integer n, generate a square matrix filled with elements from 1 to n2 in spiral order.

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[LeetCode] 605. Can Place Flowers

• linspiration   2018-12-31 发布
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Suppose you have a long flowerbed in which some of the plots are planted and some are not. However, flowers cannot be planted in adjacent plots - they would compete for water and both would die.

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[LeetCode] 867. Transpose Matrix

• linspiration   2018-12-31 发布
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The transpose of a matrix is the matrix flipped over it's main diagonal, switching the row and column indices of the matrix.

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[LeetCode] 876. Middle of the Linked List

• linspiration   2018-12-31 发布
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Given a non-empty, singly linked list with head node head, return a middle node of linked list.

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[LeetCode] 475. Heaters

• linspiration   2018-12-31 发布
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Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to warm all the houses.

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[LeetCode] 617. Merge Two Binary Trees

• linspiration   2018-12-31 发布
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Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not.

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[LeetCode] 905. Sort Array By Parity

• linspiration   2018-12-31 发布
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Given an array A of non-negative integers, return an array consisting of all the even elements of A, followed by all the odd elements of A.

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[LeetCode] 709. To Lower Case

• linspiration   2018-12-31 发布
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Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase.

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[LeetCode] 61. Rotate List

• linspiration   2018-12-30 发布
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Given a linked list, rotate the list to the right by k places, where k is non-negative.

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[LeetCode] 51. N-Queens

• linspiration   2018-12-30 发布
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The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other.