题目描述：
LeetCode 347. Top K Frequent Elements
Given a non-empty array of integers, return the k most frequent elements.
For example,
Given [1,1,1,2,2,3] and k = 2, return [1,2].
Note:
- You may assume k is ...
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[LeetCode]Top K Frequent Elements
[LeetCode]Reverse Vowels of a String
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LeetCode.
题目描述：
LeetCode 345. Reverse Vowels of a String
Write a function that takes a string as input and reverse only the vowels of a string.
Example 1:
Given s = "hello", return "holle".
Example 2:
Given s = "leetcode", return "leotcede".
题目大意：
编写函数输入一个字符串 ...
[LeetCode]Reverse String
作者是
发布于
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LeetCode.
题目描述：
Write a function that takes a string as input and returns the string reversed.
Example:
Given s = "hello", return "olleh".
题目大意：
编写函数输入字符串，返回其逆置。
例如输入s = "hello"，返回"olleh"。
解题思路：
简单题，略。
Python代码：
class Solution(object):
def reverseString ...
[LeetCode]Integer Break
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LeetCode.
题目描述：
Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum product you can get.
For example, given n = 2, return ...
[LeetCode]Power of Four
作者是
发布于
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LeetCode.
题目描述：
Given an integer (signed 32 bits), write a function to check whether it is a power of 4.
Example:
Given num = 16, return true. Given num = 5, return false.
Follow up: Could you solve ...