CNoodle

摘要： You are assigned to put some amount of boxes onto one truck. You are given a 2D array boxTypes, where boxTypes[i] = [numberOfBoxesi, numberOfUnitsPerB 阅读全文

摘要： You are given an integer array nums and an integer k. In one operation, you can pick two numbers from the array whose sum equals k and remove them fro 阅读全文

摘要： Given an array of positive integers target and an array initial of same size with all zeros. Return the minimum number of operations to form a target  阅读全文

摘要： Given two binary trees original and cloned and given a reference to a node target in the original tree. The cloned tree is a copy of the original tree 阅读全文

摘要： You are given an integer array nums with no duplicates. A maximum binary tree can be built recursively from nums using the following algorithm: Create 阅读全文

摘要： You are given an array of distinct integers arr and an array of integer arrays pieces, where the integers in pieces are distinct. Your goal is to form 阅读全文

摘要： You are standing at position 0 on an infinite number line. There is a goal at position target. On each move, you can either go left or right. During t 阅读全文

摘要： Given a binary tree where node values are digits from 1 to 9. A path in the binary tree is said to be pseudo-palindromic if at least one permutation o 阅读全文

摘要： Implement the class ProductOfNumbers that supports two methods: 1. add(int num) Adds the number num to the back of the current list of numbers. 2. get 阅读全文

摘要： You have a graph of n nodes labeled from 0 to n - 1. You are given an integer n and a list of edges where edges[i] = [ai, bi] indicates that there is 阅读全文

摘要： You have a graph of n nodes. You are given an integer n and an array edges where edges[i] = [ai, bi] indicates that there is an edge between ai and bi 阅读全文

摘要： You are given two arrays rowSum and colSum of non-negative integers where rowSum[i] is the sum of the elements in the ith row and colSum[j] is the sum 阅读全文

摘要： Given the following details of a matrix with n columns and 2 rows : The matrix is a binary matrix, which means each element in the matrix can be 0 or  阅读全文

摘要： Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie. Each child i has a g 阅读全文

摘要： Given a string s consisting only of characters a, b and c. Return the number of substrings containing at least one occurrence of all these characters 阅读全文

摘要： A valid parentheses string is either empty "", "(" + A + ")", or A + B, where A and B are valid parentheses strings, and + represents string concatena 阅读全文

摘要： Given an array of integers nums, you start with an initial positive value startValue. In each iteration, you calculate the step by step sum of startVa 阅读全文

摘要： Given the root of a binary tree and a node u in the tree, return the nearest node on the same level that is to the right of u, or return null if u is 阅读全文

摘要： An encoded string S is given. To find and write the decoded string to a tape, the encoded string is read one character at a time and the following ste 阅读全文

摘要： You are given an m x n binary matrix grid, where 0 represents a sea cell and 1 represents a land cell. A move consists of walking from one land cell t 阅读全文