反转字符串中交替的 k 个字符

#include <bits/stdc++.h>
using namespace std;
 
// user-defined function to reverse the alternate k characters of the string
string reverseString(string str, int k, int l){
 
    for (int x = 0; x < str.size();){
 
        // when the string has characters less the the value of k
        if (x + k > l)
            break;
 
        //reversing the starting characters of k value
        reverse(str.begin() + x, str.begin() + x + k);
 
        // moving in the string for reversing k characters
        x += 2 * k;
    }
    return str;
}
 
// Controller
int main(){
    string str = "tutorialspoint";
    int l = str.length();
    int k = 4;
    cout << "The reversed string is: "<< reverseString(str, k, l);
 
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
 
// User-defined function to reverse alternate k characters
//of the input string
string reverseString(string s, int k, int m){
    string result = "";
 
    int x = 0, y = 0;
 
    // Traversing the string s till the end
    while (x < m){
 
        // Traversing the string till the last character and trading backward
        for (y = min(x + k, m) - 1; y >= x; y--)
            result += s[y];
        x = min(x + k, m);
 
        // Traversing the string for the x to x+k characters 
        for (y = x; y < min(x + k, m); y++)
            result += s[y];
        x = y;
    }
 
    // Returning result
    return result;
}
 
// Controller
int main(){
    string s = "tutorialspoint";
    int M = s.length();
    int K = 2;
    cout << "The reversed string for every alternate k character is : "<< reverseString(s, K, M);
 
    return 0;
}