Python 刷Leetcode题库,顺带学英语单词(45)
Count PrimesCount the number of prime numbers less than a non-negative number, n. [#204]Example: Input: 10 Output: 4 Explanation: There are 4 prime numbers less than 10, they are 2, 3, 5....
Python 刷Leetcode题库,顺带学英语单词(44)
Number of IslandsGiven a 2d grid map of '1' s (land) and '0' s (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertic....
Python 刷Leetcode题库,顺带学英语单词(43)
House RobberYou are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping you from robbing each of them is that a....
Python 刷Leetcode题库,顺带学英语单词(42)
Reverse BitsReverse bits of a given 32 bits unsigned integer. [#190] Example 1: Input: 00000010100101000001111010011100 Output: 001110010111100000....
Python 刷Leetcode题库,顺带学英语单词(41)
Factorial Trailing ZeroesGiven an integer n, return the number of trailing zeroes in n!. [#172] Examples: Input: 3 Output: 0 Explanation: 3! = 6, no trailing zero. Inp...
Python 刷Leetcode题库,顺带学英语单词(40)
Majority ElementGiven an array of size n, find the majority element. The majority element is the element that appears more than [n/2] times.You may assume that the array is non-empty and the majority....
Python 刷Leetcode题库,顺带学英语单词(39)
Excel Sheet Column TitleGiven a positive integer, return its corresponding column title as appear in an Excel sheet. [#168]For example: 1 -> A 2 -> B 3 -> C ... 26 -> Z 27 -&a...
Python 刷Leetcode题库,顺带学英语单词(38)
Find Peak ElementA peak element is an element that is greater than its neighbors.Given an input array nums , where nums[i] ≠ nums[i+1] , find a peak element and return its index.The array may contain....
Python 刷Leetcode题库,顺带学英语单词(37)
Min StackDesign a stack that supports push, pop, top, and retrieving the minimum element in constant time. [#155]push(x) -- Push element x onto stack.pop() -- Removes the element on top of the....
Python 刷Leetcode题库,顺带学英语单词(36)
Find Minimum in Rotated Sorted ArraySuppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. [#153](i.e., [0,1,2,4,5,6,7] might become [4,5,6,7,0,1,....
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