Number of Islands - LeetCode Can you solve this real interview question? Number of Islands - Given an m x n 2D binary grid grid which represents a map of '1's (land) and '0's (water), return the number of islands. An island is surrounded by water and is formed by connecting adjacent l leetcode.com 문제 Given an m x n 2D binary grid grid which represents a map of '1's (land) and '0's (water), retur..

Flip String to Monotone Increasing - LeetCode Can you solve this real interview question? Flip String to Monotone Increasing - A binary string is monotone increasing if it consists of some number of 0's (possibly none), followed by some number of 1's (also possibly none). You are given a binary string leetcode.com Problem A binary string is monotone increasing if it consists of some number of 0'..

Letter Combinations of a Phone Number - LeetCode Can you solve this real interview question? Letter Combinations of a Phone Number - Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return the answer in any order. A mapping of d leetcode.com Problem Given a string containing digits from 2-9 inclusive, return all possibl..

Generate Parentheses - LeetCode Can you solve this real interview question? Generate Parentheses - Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. Example 1: Input: n = 3 Output: ["((()))","(()())","(())()","()(())","()()()"] Exa leetcode.com 문제 Given n pairs of parentheses, write a function to generate all combinations of well-formed paren..

Longest Arithmetic Subsequence - LeetCode Can you solve this real interview question? Longest Arithmetic Subsequence - Given an array nums of integers, return the length of the longest arithmetic subsequence in nums. Note that: * A subsequence is an array that can be derived from another array by leetcode.com 문제 Given an array nums of integers, return the length of the longest arithmetic subsequ..