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  1. #include <iostream>
  2. #include<string.h>
  3. using namespace std;
  4.  
  5.  
  6. int length_last(string str)
  7. {
  8.     int count = 0;
  9.     bool flag = false;
  10.     for (int i = str.length() - 1; i >= 0; i--) {
  11.         if ((str[i] >= 'a' && str[i] <= 'z') || (str[i] >= 'A' && str[i] <= 'Z')) {
  12.             flag = true;
  13.             count++;
  14.         }
  15.         else {
  16.             if (flag == true)
  17.                 return count;
  18.         }
  19.     }
  20.     return count;
  21. }
  22.  
  23. int solve(string s1, string s2, char c, int i){
  24. 	string temp = s1;
  25. 	s1 = s1.substr(i, s1.length());
  26. 	if(c == 'Y'){
  27. 		size_t f1 = s1.find(s2 + " ");
  28.     	if (f1 != string::npos && i+f1 == 0)
  29.         	return i+f1;
  30.     	size_t f2 = s1.find(" " + s2 + " ");
  31.     	if (f2 != string::npos)
  32.     		return i+f2+1;
  33.     	size_t f3  = s1.find_last_of(" " + s2);
  34.     	// cout<<i+f3;
  35.     	// cout<<temp.length();
  36.     	if (f3 != string::npos)
  37.     		return (i+f3)-length_last(temp)+1;
  38. 	}
  39. 	else {
  40. 		size_t found = s1.find(s2);
  41. 		if (found != string::npos)
  42.         	return i+found;
  43. 	}
  44. 	return -1;
  45. }
  46. int main() {
  47. 	string s1,s2;
  48. 	char c;
  49. 	int i;
  50. 	s1 = "hack on hacker hack";
  51. 	s2 = "hack";
  52. 	c = 'Y';
  53. 	i = 7;
  54. 	int ans = solve(s1, s2, c, i);
  55. 	if(ans == -1)
  56. 		cout<<"Goodbye Watson"<<endl;
  57. 	else
  58. 		cout<<ans<<endl;
  59. 	return 0;
  60. }
Success #stdin #stdout 0.01s 5448KB
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we love to hack on hackerearth
hack
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15
https://ideone.com/uhtcBj
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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