A perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. For example, 1, 4, 9, and 16 are perfect squares while 3 and 11 are not. Example 1:
Given N axis-aligned rectangles where N > 0, determineifthey all together form an exact cover of a rectangular region. Each rectangle is represented as a bottom-left point and a top-right point. For example, a unit square is represented as [1,1,2,2]. (coordinate of bottom-left point ...
Leetcode May Challenge - 05/14: Implement Trie (Prefix Tree)(Python) 题目描述 Implement a trie with insert, search, and startsWith methods. Note: You may assume that all inputs are consist of lowercase letters a-z. All inputs are guaranteed to be non-empty strings. 例子 Trie......
[leetcode] 100. Same Tree _ Algorithm Problem Solve for python 1. Problem 100. Same Tree Given the roots of two binary trees p and q, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurally identical, and the nodes ha...
.idea leetcode .gitignore LICENSE README.md README.md practice-makes-perfect 刷题,一直刷一直刷可能要反复刷5年的呢。考虑到阅读效果,用这样的目录结构方便Typora阅读,同时也方便直接在github上看。leetcode https://leetcode.com/problems0001...
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LeetCode Recover Binary Search Tree Android跨进程訪问(AIDL服务) 刘下记录:ImageView.scaleType 属性全解析(含视频) myeclipse解决JSP文件里script背景颜色的调整 hdu 5381 The sum of gcd(线段树+gcd) newlisp HTTP Basic Authentication codeforces 132C Logo Turtle--- dp dfs python代码风格-PEP8 ...
mid = (low+high)//2 square = mid*mid if square == num: return True elif square<num: low = mid+1 else: high = mid-1 return False 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 运行结果:
[leetcode-507-Perfect Number] We define the Perfect Number is a positive integer that is equal to the sum of all its positive divisors except itself. Now, given an integer n, write a function that returns true when it is a perfect number and false when it is not....
* Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode() : val(0), left(nullptr), right(nullptr) {} * TreeNode(int x) : val(x), left(nullptr), right(nullptr) {} ...