#include <iostream> #include <vector> #include <map> using namespace std; class Solution { public: vector<int> twoSum(vector<int> &nums, int target) { vector<int> answer; for (int i = 0; i <nums.size(); i++) { for (int j = i + 1; j< nums.size(); j++) { if (nums[i]+nums[j] == target) { answer.push_back(i); answer.push_back(j); //returnanswer; } } } return answer; } voidtest1() { Solution s; vector<int> nums = {2, 7,11, 15}; int target = 17; vector<int> temp =s.twoSum(nums, target); cout << temp[0] <<temp[1]; } vector<int> twoSum1(vector<int> &numbers, int target) { int n = numbers.size(); vector<int> result; map<int, int> index; for (int i = 0; i < n; i++){ cout << "first: i= " << i << " "; if(index.count(numbers[i]) != 0) { cout <<index[numbers[i]]<< numbers[i]; // if exists result.push_back(index[numbers[i]]); result.push_back(i); break; } cout << "second: i=" << i; index[target -numbers[i]] = i; } return result; } voidtest2() { Solution s; vector<int> nums = {2, 7,11, 15}; int target = 13; vector<int> temp =s.twoSum1(nums, target); cout << temp[0] <<temp[1]; } };
#include <iostream>
#include <cstdio>
#include <cstring>
int main() {
charstr[128];
gets(str);
int count= 0;
int len =strlen(str);
if (len< 5000) {
for (int i = (len - 1); i >=0; i--) {
if (str[i] != ' ') {
count++;
} else {
cout<<"shut down cause we meeet ' '" << endl;
break;
}
}
}
cout<< count << endl;
return 0;
}
#include <iostream>
#include <cstdio>
#include <cstring>
{
string s1;
string s2;
// chars1[128];
// chars2[128];
// gets(s1);
// gets(s2);
getline(cin,s1);
cin >>s2;
s2[0] =toupper(s2[0]);
int count = 0;
for (int j = 0;j<s1.length(); j++){
s1[j] =toupper(s1[j]);
}
for (int i = 0;i<s1.length(); i++){
if (s2[0] ==s1[i])
count++;
}
cout <<count;
return 0;
}
