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Find total number of distinct years from a string in C++
In this tutorial, we will be discussing a program to find total number of distinct years from a string.
For this we will be provided with a string containing dates in format ‘DD-MM-YYYY’ format. Our task is to find the count of distinct years mentioned in the given string.
Example
#include <bits/stdc++.h>
using namespace std;
//calculating the distinct years mentioned
int calculateDifferentYears(string str) {
unordered_set<string> differentYears;
string str2 = "";
for (int i = 0; i < str.length(); i++) {
if (isdigit(str[i])) {
str2.push_back(str[i]);
}
if (str[i] == '-') {
str2.clear();
}
if (str2.length() == 4) {
differentYears.insert(str2);
str2.clear();
}
}
return differentYears.size();
}
int main() {
string sentence = "I was born on 22-12-1955."
"My sister was born on 34-06-2003 and my mother on 23-03-1940.";
cout << calculateDifferentYears(sentence);
return 0;
}Output
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Updated on: 19-Aug-2020
1K+ Views
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