Question

How to find the duplicate strings in an array of strings with C++

Answer 1

#include <iostream>
#include <string>

int main() {
    std::string arr[] = {"C++ is a high-level, general-purpose programming language", 
        "created by Danish computer scientist Bjarne Stroustrup", 
        "C++ is a high-level, general-purpose programming language",
        "Multi-paradigm: procedural, imperative, functional", 
        "object-oriented, generic, modular",
        " C++23 / 19 March 2023",
        "object-oriented, generic, modular"
    }; 

    int size = sizeof(arr)/sizeof(arr[0]);
 
    for (int i = 0; i < size; i++) {
        for (int j = i + 1; j < size; j++) {
            if (arr[i] == arr[j]) {
                std::cout <<  "line " << i << " and line " << j << " = " << arr[i] << "\n";
            }
        }
    }
}
 
 
 
/*
run:
 
line 0 and line 2 = C++ is a high-level, general-purpose programming language
line 4 and line 6 = object-oriented, generic, modular
 
*/

 

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