def print_pascal_triangle(num_rows): # 初始化杨辉三角形的第一行 triangle = [[1]] for i in range(1, num_rows): # 初始化当前行的第一个元素 prev_row = triangle[i - 1] curr_row = [1] # 根据上一行计算当前行的元素 for j in range(1, i): curr_row.append(prev_row[j - 1] ...
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...
AC代码(Python) 1classSolution(object):2defgenerate(self, numRows):3"""4:type numRows: int5:rtype: List[List[int]]6"""7ans =[]8foriinrange(numRows):9this =[]10forjinrange(i+1):11this.append(1)12ifi > 1:13forxinrange(i - 1):14this[x+1] = ans[i-1][x] + ans[i-...
After that,1is appended to the list. Then, aforloop is used again to put the values of the number inside the adjacent row of the triangle. Finally, the Pascal Triangle is printed according to the given format. The Program for Pascal’s Triangle in Python ...
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。
代码(Python3) classSolution:defcandy(self,ratings:List[int])->int:n:int=len(ratings)# 将 ratings 收集成 (rating, index) 的列表,# 然后按照 rating 升序排序,方便后续状态转移cells:List[Tuple[int,int]]=[(rating,i)fori,ratinginenumerate(ratings)]cells.sort()# dp[i] 表示第 i 个孩子分到...
c-plus-plus-pascal-triangle The Python equivalence looks simpler: 1 2 3 4 5 6 7 8 9 10 11 12 classSolution:# @return a list of integersdefgetRow(self,rowIndex):ifrowIndex==0:return[1]r=[0]*(rowIndex +1)r[0]=1r[1]=1foriinrange(rowIndex -1):forjinrange(rowIndex,0,-1):...
其中 ?...步骤二:新建一个基于帕斯卡三角规则的三角形,三角形-2,即,将处于边缘的字符和0进行异或,处于里面的字符和相邻的字符进行异或步骤三:把三角形-1中的字符和三角形-2中的字符相加的结果替换原字符步骤四...Kishorekumar K and Anitha Kumari K, “A Novel Encryption Technique using Pascal Triangle ...
green right triangle - the Run button green bug - the debug button Windows (only) In the displayed CMakeLists.txt file, edit the 5th line to remove "-DMAC". **Click the Hammer icon to build. Build actions will display in a lower pane. "Build finished" will display when complete. To...
代码(Python3) class Solution: def generate(self, numRows: int) -> List[List[int]]: dp: List[List[int]] = [] for i in range(numRows): # 每一行默认全都是 1 ,直接将边界情况设置好 dp.append([1] * (i + 1)) # 仅处理中间非边界情况的数,即它等于左上和右上的数之和 for j in...