LeetCode 79. Word Search
题目Given a 2D board and a word, find if the word exists in the grid.
The word can be constructed from letters of sequentially adjacent cell, where “adj
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LeetCode 203. Remove Linked List Elements
题目Remove all elements from a linked list of integers that have value val.
Example:
12Input: 1->2->6->3->4->5->6, val = 6Output: 1-&
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LeetCode 67. Add Binary
题目Given two binary strings, return their sum (also a binary string).
The input strings are both non-empty and contains only characters 1 or 0.
Example
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LeetCode 210. Course Schedule II
题目There are a total of n courses you have to take, labeled from 0 to n-1.
Some courses may have prerequisites, for example to take course 0 you have t
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LeetCode 347. Top K Frequent Elements
题目Given a non-empty array of integers, return the k most frequent elements.
Example 1:
12Input: nums = [1,1,1,2,2,3], k = 2Output: [1,2]
Example 2:
1
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LeetCode 50. Pow(x, n)
题目Implement pow(x, n), which calculates x raised to the power n (x^n).
Example 1:
12Input: 2.00000, 10Output: 1024.00000
Example 2:
12Input: 2.10000,
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LeetCode 151. Reverse Words in a String
题目Given an input string, reverse the string word by word.
Example 1:
12Input: "the sky is blue"Output: "blue is sky the"
Example
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LeetCode 1344. Angle Between Hands of a Clock
题目Given two numbers, hour and minutes. Return the smaller angle (in degrees) formed between the hour and the minute hand.
Example 1:
12Input: hour = 1
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LeetCode 100. Same Tree
题目Given two binary trees, write a function to check if they are the same or not.
Two binary trees are considered the same if they are structurally ide
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LeetCode 190. Reverse Bits
题目Reverse bits of a given 32 bits unsigned integer.
Example 1:
123Input: 00000010100101000001111010011100Output: 00111001011110000010100101000000Expla
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