Pascal's Triangle leetcode java(杨辉三角) 题目: GivennumRows, generate the firstnumRowsof Pascal's triangle. For example, givennumRows= 5, Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] 题解: 既然讲到了Pascal‘s Triangle,即杨辉三角。那么就先去Wikipedia上面复习...
[LeetCode] 118. Pascal's Triangle 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],[...
welcome to my blog LeetCode Top Interview Questions 118. Pascal’s Triangle (Java版; Easy) 题目描述 Given a non-negative integer numRows, generate the first numRows of Pascal's triangle. 1. In Pascal's triangle, each number is the sum of the two numbers directly above it. Exampl...
实现代码: ## LeetCode 118classSolution:defgenerate(self,num_rows):## The number of rowstriangle=[]forrow_numinrange(num_rows):## For a specific rowrow=[Nonefor_inrange(row_num+1)]## All None for this rowrow[0]=1## The most left number = 1row[-1]=1## The most right number...
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。
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...
In Europe, Pascal (1623-1662) discovered this law in 1654, so this table is also called Pascal's triangle. Pascal’s discovery was 393 years later than Yang Hui and 600 years later than Jia Xian. 6. Find the greatest common divisor and the least common multiple...
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【Leetcode】119. Pascal's Triangle II Time complexity: O(k) Space complexity: O(k)