Leetcode 118.杨辉三角(Pascal's Triangle) Leetcode 118.杨辉三角 1 题目描述(Leetcode题目链接) 给定一个非负整数 numRows,生成杨辉三角的前 numRows 行。在杨辉三角中,每个数是它左上方和右上方的数的和。 2 题解 直接构造。......
classSolution{public:vector<int>getRow(introwIndex){ vector<int> ans;for(inti =0; i < rowIndex +1; i++) { ans.push_back(1);for(intj = i -1; j >0; j--) ans[j] += ans[j -1]; }returnans; } };
Given an integer numRows, return the first numRows of Pascal's triangle. In Pascal's triangle, each number is the sum of the two numbers directly above it as shown: Example 1: Input: numRows = 5 Output: [[1],[1,1],[1,2,1],[1,3,3,1],[1,4,6,4,1]] Example 2: Input:...
Learn how to generate and print the pascal triangle in the C programming language. In mathematics, Pascal's triangle is a triangular arrangement of numbers that gives the coefficients in the expansion of any binomial expression, such as(x + y)n. It is named for the 17th-century French mathe...
leetcode -- Pascal's Triangle II -- 简单 https://leetcode.com/problems/pascals-triangle-ii/ 杨辉三角的题目 AI检测代码解析 class Solution(object): def getRow(self, rowIndex): """ :type rowIndex: int :rtype: List[int] """ k = rowIndex + 1...
【Leetcode】Pascal's Triangle II 题目链接:https://leetcode.com/problems/pascals-triangle-ii/ 题目: th For example, given k = 3, Return[1,3,3,1]. Note: Could you optimize your algorithm to use only O(k) extra space? 思路: 要求空间复杂度为O(k),其实只需要记录前一行的结果就可以了...
118. 杨辉三角 - 给定一个非负整数 numRows,生成「杨辉三角」的前 numRows 行。 在「杨辉三角」中,每个数是它左上方和右上方的数的和。 [https://pic.leetcode-cn.com/1626927345-DZmfxB-PascalTriangleAnimated2.gif] 示例 1: 输入: numRows = 5 输出: [[1],[1,1
0116 Populating Next Right Pointers in Each Node c++ python Medium 0117 Populating Next Right Pointers in Each Node II c++ python Medium 0118 Pascal's Triangle c++ python Easy 0119 Pascal's Triangle II c++ python Easy 0120 Triangle c++ python Medium 0121 Best Time to Buy and Sell Stock c++ ...
sort() # dp[i] 表示第 i 个孩子分到的糖果数,初始化最少每人一个 dp: List[int] = [1] * n # ans 维护所有孩子分到的糖果数之和 ans: int = 0 #按 rating 升序进行状态转移,这样就能保证在更新 dp[i] 时, # 其左右两侧的 dp 值均已确定 for (rating, i) in cells: # 如果其评分...
杨辉三角在英文版的LeetCode中被称为“Pascal Triangle”,这不免让人疑惑,这都是是谁的三角呢。 要不这样,谁生的早,就算谁的。 杨辉,生于1238年: Pascal(Blaise Pascal?),生于1623: OK,杨辉胜出 -- 那就叫杨辉三角。 1 读题 图源:LeetCode