CNoodle

摘要： There are n oranges in the kitchen and you decided to eat some of these oranges every day as follows: Eat one orange. If the number of remaining orang 阅读全文

摘要： Given two strings s and t, return true if they are both one edit distance apart, otherwise return false. A string s is said to be one distance apart f 阅读全文

摘要： Given a 2D grid of size m x n and an integer k. You need to shift the grid k times. In one shift operation: Element at grid[i][j] moves to grid[i][j + 阅读全文

摘要： There is a brick wall in front of you. The wall is rectangular and has several rows of bricks. The bricks have the same height but different width. Yo 阅读全文

摘要： Given the root of an n-ary tree, return the postorder traversal of its nodes' values. Nary-Tree input serialization is represented in their level orde 阅读全文

摘要： 168. Excel Sheet Column Title Given an integer columnNumber, return its corresponding column title as it appears in an Excel sheet. For example: A -> 阅读全文

摘要： Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in th 阅读全文

摘要： Given the root of a tree, you are asked to find the most frequent subtree sum. The subtree sum of a node is defined as the sum of all the node values 阅读全文

摘要： You have a lock in front of you with 4 circular wheels. Each wheel has 10 slots: '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'. The wheels can rota 阅读全文

摘要： A set of real numbers can be represented as the union of several disjoint intervals, where each interval is in the form [a, b). A real number x is in 阅读全文

摘要： The thief has found himself a new place for his thievery again. There is only one entrance to this area, called root. Besides the root, each house has 阅读全文

摘要： There are n different online courses numbered from 1 to n. You are given an array courses where courses[i] = [durationi, lastDayi] indicate that the i 阅读全文

摘要： Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window. Example: MovingAverage m = new Movin 阅读全文

摘要： Design your implementation of the circular queue. The circular queue is a linear data structure in which the operations are performed based on FIFO (F 阅读全文

摘要： You have k lists of sorted integers in ascending order. Find the smallest range that includes at least one number from each of the k lists. We define 阅读全文

摘要： Given an integer array nums and two integers k and t, return true if there are two distinct indices i and j in the array such that abs(nums[i] - nums[ 阅读全文

摘要： You are given two integer arrays nums1 and nums2 sorted in non-decreasing order and an integer k. Define a pair (u, v) which consists of one element f 阅读全文

摘要： Given the root of a binary tree and an integer targetSum, return the number of paths where the sum of the values along the path equals targetSum. The 阅读全文

摘要： Given an integer n, break it into the sum of k positive integers, where k >= 2, and maximize the product of those integers. Return the maximum product 阅读全文

摘要： There is a ball in a maze with empty spaces (represented as 0) and walls (represented as 1). The ball can go through the empty spaces by rolling up, d 阅读全文