Question

3. How Will You Compare? Write a Comparator class with the following 3 overloaded compare methods: 1. boolean compare(int a, int b): Return true if int a = int b, otherwise return false. 2. boolean compare(string a, string b): Return true if string a = string b, otherwise return false. 3. boolean compare(int[] a, int[] b): Return true if both of the following conditions hold true: O Arrays a and b are of equal length. . For each indexi (where 0 si<lal, 16), a[i] = b[i]. Otherwise, return false. Note: For C++, both parameters are of type Vector<int>, Constraints • For strings, 1 sal, lbl s 2000 • For integers, 0 s a, b s 10000000 • For integer arrays, 0 sal, b[ s 10

in C++ and comments please for better understanding

Answer 1

Here is the answer for your question in C++ Programming Language.

CODE :

#include <iostream> #include<string> using namespace std; //Writing method declarations bool compare(int, int); bool compare(string, string); bool compare(int[], int[],int,int); int main() {     //Creating variable to read number of test case     //i is taken to loop from 0 to T     //choice is to read choice, a and b are integers     // m and n are length of arrays, arr1 and arr2 are arrays     int i = 0,T,choice,a,b,m,n;     int arr1[10],arr2[10];     string str1,str2;     bool result1,result2,result3;     cin >> T; //Reading T     while(i<T) //loop to iterate through the no.of test cases     {         cin >> choice; //reading choice         //switching to the case         switch(choice)         {             //To read strings and call compare method and display result             case 1 :cin >> str1;                     cin >> str2;                     result1 = compare(str1,str2);                     if(result1 == 1)                     {                         cout << "Same" << endl;                     }                     else                     {                          cout << "Different" << endl;                     }                     break;             //To read integers and compare them and display result             case 2 :cin >> a ;                     cin >> b ;                     result2 = compare(a,b);                     if(result2 == 1)                     {                         cout << "Same" << endl;                     }                     else                     {                          cout << "Different" << endl;                     }                     break;             //To read length and value of array and display the result after comparision             case 3 :cin >> m ;                     cin >> n ;                     for(int j =0;j<m;j++){ cin >> arr1[j];}                   for(int k =0;k<n;k++){ cin >> arr2[k];}                     result3 = compare(arr1,arr2,m,n);                     if(result3 == 1)                     {                         cout << "Same" << endl;                     }                     else                     {                          cout << "Different" << endl;                     }                     break;             default : cout << "Invalid Option " << endl;                     break;         }         i++;     }             return 0; } //Comparing integer numbers bool compare(int a,int b) {     if(a == b)     return true;     else     return false; } //Comparing strings using compare() bool compare(string str1,string str2) {     if(str1.compare(str2) == 0)     return true;     else     return false; } //Comparing two arrays bool compare(int arr1[],int arr2[],int m,int n) {     int count = 0;     if( m == n ) // if their length is same checks each value in array     {         for(int i =0;i<m;i++)         {             if(arr1[i] == arr2[i])             count++;            }         if(count == m)         return true;         else         return false;     }     else //if the length is not same returns false     {         return false;     } }

SCREENSHOTS:

Please see the screenshots of the code below for indentations of the code.

10 1 #include <iostream> 2 #include<string> 3 using namespace std; 4 //writing method declarations 5 bool compare(int, int); 6 bool compare (string, string); 7 bool compare(int[], int[], int,int); 8 int main() 9-{ //Creating variable to read number of test case Ili is taken to Loop from 0 to T //choice is to read choice, a and b are integers // m and n are Length of arrays, arr1 and arr2 are arrays int i = 0,1,choice, a,b,m,n; int arr1[10], arr2[10]; string stri, str2; bool resulti,result2,result3; cin >> T; //Reading T while(i<T) // Loop to iterate through the no.of test cases 11 12 13 18 19 cin >> choice; //reading choice //switching to the case switch(choice) //To read strings and call compare method and display result case 1 :cin >> stri; cin >> str2; result1 = compare(str1, str2); if(result1 == 1) cout << "Same" << endl; else cout << "Different" << endl; break;

//To read integers and compare them and display result case 2 :cin>> a ; cin >> b; result2 = compare(a,b); if(result2 == 1) cout << "Same" << endl; else cout << "Different" << endl; break; //To read Length and value of array and display the result after comparision case 3 :cin >> m; cin >>n; for(int j =0;j<m; j++){ cin >> arr1[]}} for(int k =0;k<n;k++){ cin >> arr2[k]}}, result3 = compare(arr1, arr2,m,n); if(result3 == 1) cout << "Same" << endl; else cout << "Different" << endl; break; default : cout << "Invalid Option " << endl; break; i++; return 0; 61 } 62 //Comparing integer numbers 63 bool compare(int a, int b) 64 - { if(a == b) 66 return true; 65

67 else 68 return false; 69 } 70 //Comparing strings using compare() 71 bool compare(string str1, string str2) 72 - { 73 if(str1.compare(str2) == @), 74 return true; else 76 return false; 77 } 78 //Comparing two arrays 79 bool compare(int arr1[], int arr2[], int mint n) 80 - { int count = 0; if( m == n ) // if their length is same checks each value in array 75 81 82 83 for(int i =0;i<m; i++) if(arr1[i] == arr2[i]) count++; if(count == m) return true; else return false; else //if the length is not same returns false return false;

OUTPUT:

3 helloWorld helloworld $g++ -o main *.cpp $main Same Different Same wwwN 1 2 3 1 2 3

mm $g++ -o main *.cpp $main Different Same 1 2 3 1 2 3 4 HackerRank HackerRank

$g++ -o main *.cpp $main Different Different 34 1 2 3 1 2 3 4 HackerRank hackerRank

Any doubts regarding this can be explained with pleasure:)