Strings in C++ HackerRank Solution

Hello Programmers, In this post, you will know how to solve the Strings in C++ HackerRank Solution. This problem is a part of the HackerRank C++ Programming Series.

One more thing to add, don’t directly look for the solutions, first try to solve the problems of Hackerrank by yourself. If you find any difficulty after trying several times, then you can look for solutions.

Strings in C++ HackerRank Solution

Problem

C++ provides a nice alternative data type to manipulate strings, and the data type is conveniently called string. Some of its widely used features are the following:
Declaration:

string a = "abc";

Size:

int len = a.size();

Concatenate two strings:

string a = "abc";
string b = "def";
string c = a + b; // c = "abcdef".

Accessing i th element:

string s = "abc";
char   c0 = s[0];   // c0 = 'a'
char   c1 = s[1];   // c1 = 'b'
char   c2 = s[2];   // c2 = 'c'
s[0] = 'z';         // s = "zbc"

P.S.: We will use cin/cout to read/write a string.

Input Format

You are given two strings, a and b, separated by a new line. Each string will consist of lower case Latin characters (‘a’-‘z’).

Output Format

In the first line print two space-separated integers, representing the length of a and b, respectively.In the second line print the string produced by concatenating a and b(a+b).In the third line print two strings separated by a space, a’ and b’.a’ and b’ are the same as a and b, respectively, except that their first characters are swapped.

Sample Input :

abcd
ef

Sample Output :

4 2
abcdef
ebcd af

Explanation :

• a  = “abcd”
• b  = “ef”
• |a| = 4
• |b| = 2
• a+b = “abcdef”
• a’ = “ebcd”
• b’ = “af”

Strings in C++ HackerRank Solutions

#include <iostream>
#include <string>
using namespace std;
int main()
{
    string str1,str2,str3;
    char b,a;
    int strlen1,strlen2;
    //string one
    cin>>str1;
    //string two
      cin>>str2;
    //first string size
    strlen1 = str1.size();
    //second string size
    strlen2 = str2.size();
    cout<<strlen1;
    cout<<" "<<strlen2;
    // concatinate two string
    str3 = str1+str2;
    cout<<"\n"<<str3;
    // a' b'
    a = str2[0];
    b = str1[0];
    str1[0] = a;
    str2[0] = b;
    cout<<"\n";
    cout<<str1;
    cout<<" "<<str2;
    return 0;
}

Disclaimer: The above Problem (Strings in C++) is generated by Hackerrank but the Solution is Provided by BrokenProgrammers. This tutorial is only for Educational and Learning purposes.

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