⭐️ # 題目敘述 There are n kids with candies. You are given an integer array candies , where each candies[i] represents the number of candies the ith kid has, and an integer extraCandies , denoting the number of extra candies that you have. Return a boolean array result of length n , where result[i] is...

⭐️⭐️⭐️⭐️⭐️ # 題目敘述 There are n piles of coins on a table. Each pile consists of a positive number of coins of assorted denominations. In one move, you can choose any coin on top of any pile, remove it, and add it to your wallet. Given a list piles , where piles[i] is a list of integers denoting the...

⭐️⭐️⭐️ # 題目敘述 Given a string s , find the longest palindromic subsequence's length in s . A subsequence is a sequence that can be derived from another sequence by deleting some or no elements without changing the order of the remaining elements. # Example 1: Input: s =...

⭐️⭐️⭐️ # 題目敘述 Given two integer arrays pushed and popped each with distinct values, return true if this could have been the result of a sequence of push and pop operations on an initially empty stack, or false otherwise. # Example 1: Input: pushed = [1,2,3,4,5], popped = [4,5,3,2,1] Output:...

⭐️⭐️⭐️ # 題目敘述 Given a string path , which is an absolute path (starting with a slash '/' ) to a file or directory in a Unix-style file system, convert it to the simplified canonical path. In a Unix-style file system, a period '.' refers to the current directory, a double period...

⭐️⭐️⭐️ # 題目敘述 You are given a string s , which contains stars * . In one operation, you can: Choose a star in s . Remove the closest non-star character to its left, as well as remove the star itself. Return the string after all stars have been removed. Note: The input will be generated such that...

⭐️ # 題目敘述 Given a string s containing just the characters '(' , ')' , '{' , '}' , '[' and ']' , determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open...

⭐️⭐️⭐️⭐️⭐️ # 題目敘述 There is a directed graph of n colored nodes and m edges. The nodes are numbered from 0 to n - 1 . You are given a string colors where colors[i] is a lowercase English letter representing the color of the ith node in this graph (0-indexed). You are also given a 2D array edges where...

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⭐️⭐️⭐️ # 題目敘述 Given a reference of a node in a connected undirected graph. Return a deep copy (clone) of the graph. Each node in the graph contains a value ( int ) and a list ( List[Node] ) of its neighbors. class Node { public int val; public List<Node>...