3、在Python中难点应该就是每行的第一个元素和最后一个元素,最后一个元素通过判断j==i就可以区分了; 1classSolution:2#@return a list of lists of integers3defgenerate(self, numRows):4ret =[]5foriinrange(numRows):6ret.append([1])7forjinrange(1,i+1):8ifj==i:9ret[i].append(1)10else...
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] ] 代码:oj测试通过 Runtime: 46 ms 1classSolution:2#@return a list of lists of integers3defgenerate(self, numRows):4ifnum...
3、在Python中难点应该就是每行的第一个元素和最后一个元素,最后一个元素通过判断j==i就可以区分了; 1classSolution:2#@return a list of lists of integers3defgenerate(self, numRows):4ret =[]5foriinrange(numRows):6ret.append([1])7forjinrange(1,i+1):8ifj==i:9ret[i].append(1)10else...
Pascal’s Triangle 题目大意 输出帕斯卡三角前N行 1 121 1331 解题思路 注意帕斯卡三角中,除了首尾,其他值为上一层的两个邻值的和 代码 代码语言:javascript 复制 classSolution(object):defgenerate(self,numRows):""":type numRows:int:rtype:List[List[int]]"""ifnumRows==0:return[]ans=[]foriinrang...
请不要在前面输出多余的空格。...但是Python可以进行列表推导式运算,这样就节约了一定的代码量,但是运算的复杂度没有变化。 44730 leetcode-119-Pascals Triangle II(生成某一行的帕斯卡三角形) 题目描述: Given a non-negative index k where k ≤ 33, return the kth index row of the Pascal's tr...
题目链接: Pascal's Triangle II: https://leetcode.com/problems/pascals-triangle-ii/ 杨辉三角 II : https://leetcode.cn/problems/pascals-triangle-ii/ LeetCode 日更第166天,感谢阅读至此的你 欢迎点赞、收藏鼓励支持小满
In Pascal’s triangle, each number is the sum of the two numbers directly above it. Example: Input: 3 Output: [1,3,3,1] 1. 2. Follow up: Could you optimize your algorithm to use only O(k) extra space? 题目大意 计算杨辉三角的第k行是多少。
Given an integer numRows, return the first numRows ofPascal's triangle. InPascal's triangle, each number is the sum of the two numbers directly above it as shown: 我的代码 importcopyclassSolution:defgenerate(self,numRows:int)->List[List[int]]:res_list=[[1]]if(numRows==1):retur...
Given an index k, return the kth row of the Pascal’s triangle. For example, given k = 3, Return [1,3,3,1]. Note: Could you optimize your algorithm to use only O(k) extra space? Ways 杨辉三角。这个题之前用java做过,不过现在改用python重新刷。
版本3:参考https://leetcode.com/problems/pascals-triangle/discuss/38171/Maybe-shortest-c%2B%2B-solution 其思想就是直接使用二维数组。注意二维数组初始化,以及resize用法(http://www.cplusplus.com/reference/vector/vector/resize/) vector<vector<int>>generate(intnumRows){vector<vector<int>>results(numRows...