classSolution{public:boolcanConstruct(stringransomNote,stringmagazine){typedefset<int>::iteratorIT;set<int>getS;pair<IT,bool>result;intlen1=ransomNote.size();intlen2=magazine.size();for(inti=0;i<len1;++i)for(intj=0;j<len2;++j)if(ransomNote[i]==magazine[j]){result=getS.insert(j);if...
i.e., after this step, s may become s = x + y or s = y + x. Apply step 1 recursively on each of the two substrings x and y.Given two strings s1 and s2 of the same length, return true if s2 is a scrambled string of s1, otherwise, return false....
We are given two strings, A and B. A shift(变换)on A consists of taking string A and moving the leftmost(最左) character to the rightmost(最右) position. For example, if A = 'abcde', then it will be 'bcdea' after one shift on A. Return True if and only if A can become B a...
“When you see string problem that is about subsequence or matching, dynamic programming method should come to your mind naturally. ” 所以这道题还是用DP的思想解决。 大体思路是,s1取一部分s2取一部分,最后是否能匹配s3。 动态规划数组是dp[i][j],表示:s1取前i位,s2取前j位,是否能组成s3的前i+j...
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» Solve this problem [解题思路] 第一个想法是merge sort或许可以做。 1:boolisInterleave(strings1,strings2,strings3){2://StarttypingyourC/C++solutionbelow3://DONOTwriteintmain()function4:if(s3.size()!=(s1.size()+s2.size()))5:{6:returnfalse;7:}8:inti=0,j=0,k=0;9:while(i<s1...
#include <iostream> #include <vector> #include <string> #include <algorithm> #include <queue> using namespace std; struct Graph{ vector<vector<int>> arr; int node_num; Graph(int n, vector<vector<int>> edges){ this->node_num = n; this->arr = vector<vector<int>>(n,vector<int>(...
My concise recursive and DP solutions with full explanation in C++ ● Please refer to my blog post if you have any comment. Wildcard matching problem can be solved similarly. 代码语言:javascript 代码运行次数:0 运行 AI代码解释 classSolution{public:boolisMatch(string s,string p){if(p.empty()...
If you are spending too much time on a problem, look and interpret the solutions Familiarize yourself with for loops, while loops, and if/else statements Make sure you know arrays For string input problems, make sure to familiarize with the String methods(Ex: indexOf, substring. etc) I rec...
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