Question

How to move the n word to the end of a string in C++

Answer 1

#include <iostream>
#include <sstream>
#include <string>
#include <vector>

std::string move_nth_word_to_end_of_string(const std::string& s, std::size_t n)
{
    std::istringstream iss(s);
    std::vector<std::string> words;
    std::string word;

    // Split into words
    while (iss >> word) {
        words.push_back(word);
    }

    if (n >= words.size()) {
        // Out of range: return original string unchanged
        return s;
    }

    // Move the nth word to the end
    std::string moved = words[n];
    words.erase(words.begin() + n);
    words.push_back(moved);

    // Reconstruct the string
    std::ostringstream oss;
    for (std::size_t i = 0; i < words.size(); ++i) {
        if (i > 0) oss << ' ';
        oss << words[i];
    }

    return oss.str();
}

int main()
{
    std::string s = "Would you like to know more? (Explore and learn)";
    std::size_t n = 2;

    std::string result = move_nth_word_to_end_of_string(s, n);
    std::cout << result << '\n';
}



/*
run:

Would you to know more? (Explore and learn) like

*/

 

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