Question

Write a C++ program that generates a sequence of 26 random letters, without duplication, one letter per output line.

Answer 1

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

int main() {
    srand(time(NULL));
    bool chars[26];
    for (int i = 0; i < 26; ++i) {
        chars[i] = false;
    }
    for (int i = 0; i < 26; ++i) {
        int index = rand() % 26;
        while (chars[index] == true) {
            index = rand() % 26;
        }
        chars[index] = true;
        cout << (char)('A'+index) << endl;
    }
    return 0;
}