做DFS时,有很多小细节,比如该题,temp需要pop,不能在上面加入result那里做,应该是在调用递归后做。 此题肯定有非递归写法,有空琢磨。
问题: Given two integers n and k, return all possible combinations ofk numbers out of 1 ... n....solution is: [ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4], ] 解答思路: 首先我们从n个数中取一个数,然后剩下的n-1个数又构成一个Combinations
Combinations Desicription Given two integers n and k, return all possible combinations of k numbers out
Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.
Computing the exact number of ways that N things can be taken M at a time can be...
Given two integers n and k, return all possible combinations of k numbers out of 1 … n.
Question : Given a digit string, return all possible letter combinations that the number could represent...tmp += dic[num][i]; getRet(digits, tmp, pos+1, result); } } }; 参考推荐: Letter Combinations
1); combination.pop_back(); } } }; Reference https://leetcode.com/problems/combinations
Combinations Given two integers n and k, return all possible combinations of k numbers out of 1 ... n
【题目描述】 Given a digit string, return all possible letter combinations that the number could represent
class Solution { public: vector<vector<int>> ans; vector<vector<int>> co...
Problem # Given two integers n and k, # return all possible combinations of k numbers out of 1 ..
【LeetCode】Letter Combinations of a Phone Number 题目 在手机九宫格键盘上输入一串数字,给出可能打印出来的字符串的集合。
Problem # Given a digit string, # return all possible letter combinations that the number could
Given a digit string, return all possible letter combinations that the number could represent.
class Solution { public: vector<string> letterCombinations(string digits) { ...
Letter Combinations of a Phone Number Given a digit string, return all possible letter combinations that
题目 class Solution { public: char a[10][5]={{'\0'},{'\0'},{'a','b','c'},{'d',...
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