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소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem Given a set of distinct positive integers nums, return the largest subset answer such that every pair (answer[i], answer[j]) of elements in this subset satisfies: answer[i] % answer[j] == 0, or answer[j] % answer[i] == 0 If there are multiple solutions, return any of them. Example 1: Input: nums = [1,2,3] Output: [1,2] Explanation: [1,3] is also accepted. Exa..

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem Design the CombinationIterator class: CombinationIterator(string characters, int combinationLength) Initializes the object with a string characters of sorted distinct lowercase English letters and a number combinationLength as arguments. next() Returns the next combination of length combinationLength in lexicographical order. hasNext() Returns true if and onl..

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem Given an array of integers temperatures represents the daily temperatures, return an array answer such that answer[i] is the number of days you have to wait after the ith day to get a warmer temperature. If there is no future day for which this is possible, keep answer[i] == 0 instead. Example 1: Input: temperatures = [73,74,75,71,69,72,76,73] Output: [1,1,4,..

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem Given the head of a linked list and an integer val, remove all the nodes of the linked list that has Node.val == val, and return the new head. Example 1: Input: head = [1,2,6,3,4,5,6], val = 6 Output: [1,2,3,4,5] Example 2: Input: head = [], val = 1 Output: [] Example 3: Input: head = [7,7,7,7], val = 7 Output: [] Constraints: The number of nodes in the list ..

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem 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 startValue plus elements in nums (from left to right). Return the minimum positive value of startValue such that the step by step sum is never less than 1. Example 1: Input: nums = [-3,2,-3,4,2] Output: 5 Explanation: ..

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem Given the root of a binary tree, return the sum of all left leaves. Example 1: Input: root = [3,9,20,null,null,15,7] Output: 24 Explanation: There are two left leaves in the binary tree, with values 9 and 15 respectively. Example 2: Input: root = [1] Output: 0 Constraints: The number of nodes in the tree is in the range [1, 1000]. -1000

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem Given the root of a binary tree, return the sum of all left leaves. Example 1: Input: root = [3,9,20,null,null,15,7] Output: 24 Explanation: There are two left leaves in the binary tree, with values 9 and 15 respectively. Example 2: Input: root = [1] Output: 0 Constraints: The number of nodes in the tree is in the range [1, 1000]. -1000

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem You are given the root of a binary tree containing digits from 0 to 9 only. Each root-to-leaf path in the tree represents a number. For example, the root-to-leaf path 1 -> 2 -> 3 represents the number 123. Return the total sum of all root-to-leaf numbers. Test cases are generated so that the answer will fit in a 32-bit integer. A leaf node is a node with no c..

소스 코드는 여기 있습니다. 문제는 여기 있습니다. Problem Given an m x n matrix board containing 'X' and 'O', capture all regions that are 4-directionally surrounded by 'X'. A region is captured by flipping all 'O's into 'X's in that surrounded region. Example 1: Input: board = [["X","X","X","X"],["X","O","O","X"],["X","X","O","X"],["X","O","X","X"]] Output: [["X","X","X","X"]..