#include <iostream>
#include <bits/stdc++.h>
using namespace std;

/**
 * Problem statement
 * Check if two strings are k-anagrams or not 
 * 
 * Given two strings of lowercase alphabets and a value K, your task is to complete the given function which tells if  two strings are K-anagrams of each other or not.
 * 
 * Two strings are called K-anagrams if both of the below conditions are true.
 * 1. Both have same number of characters.
 * 2. Two strings can become anagram by changing at most K characters in a string.
 * 
 * ========================
 * 
 * Example input and output
 *
 * Input: str1="sun" str2="bun" k=1
 * Output: true
 * 
 * Input: str1="steam" str2="dream" k=2
 * Output: true
 * 
 * Input: str1="class" str2="green" k=2
 * Output: false
 * 
 * Input: str1="dog" str2="got" k=1
 * Output: true
 * 
 * Input: str1="right" str2="thing" k=1
 * Output: true
 * 
 * Input: str1="trick" str2="belt" k=5
 * Output: false
 *
 * =========================
 *
 * Task:
 * Just complete the given function `areKAnagrams` that
 * returns `true` if the strings can be turned into K-anagrams,
 * else return `false`.
 */

class Solution {
  public: 
    bool areKAnagrams(string str1, string str2, int k) {
    int n1=str1.length;
    int n2=str2.length;
    if(n1!=n2)
    return false;
    sort(str1.begin().str1.end());
    sort(str2.begin().str2.end());
    for(int i=0;i<n1;i++)
    if(str1[i]!=str2[i])
    return false;
    return true;
    
    }
};

int main() 
{
      string str1, str2;
      cin>>str1>>str2;
      int k;
      cin>>k;
      Solution ob;
      if(ob.areKAnagrams(str1, str2, k) == true)
       cout<<"\n1";
      else 
       cout<<"\n0";
}

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Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}