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Find number of candidates in the Exam

  • Difficulty Level : Basic
  • Last Updated : 27 May, 2021

Given the last rank ‘L’ and the number of candidates at the last rank ‘T’, the task is to find the total number of candidates in the Exam. 

Input: L = 5, T = 1
Output: 5

Input: L = 10, T = 2
Output: 11

Approach: 

  1. Suppose L = 5 and T = 2.
  2. Then there can be many possible rank combinations, like 1, 2, 3, 3, 5, 5.
  3. So now in this, as you can see, the last rank is 5 and there are 2 students at rank 5,
  4. Therefore, the total number of candidates is 6.
  5. This can be understood by a simple formula:
L+T-1

Below is the implementation of the above approach.  

C++




// C++ program to find total number of candidates
// in an Exam from given last rank
// and Number of student at this last rank.
 
#include <iostream>
using namespace std;
 
// Function to find total number of
// Participants in Exam.
int findParticipants(int L, int T)
{
    return (L + T - 1);
}
 
// Driver code
int main()
{
    int L = 10, T = 2;
    cout << findParticipants(L, T);
 
    return 0;
}

Java




// Java program to find total number of
// candidates in an Exam from given last rank
// and Number of student at this last rank.
class GFG
{
 
    // Function to find total number of
    // Participants in Exam.
    static int findParticipants(int L, int T)
    {
        return (L + T - 1);
    }
 
    // Driver code
    public static void main(String args[])
    {
        int L = 10, T = 2;
        System.out.print(findParticipants(L, T));
    }
}
 
// This code is contributed by Gowtham Yuvaraj

Python3




# Python3 program to find total number
# of candidates in an Exam from given last rank
# and Number of student at this last rank.
 
# Function to find total number of
# Participants in Exam.
def findParticipants(L, T) :
 
    return (L + T - 1);
 
# Driver code
if __name__ == "__main__" :
 
    L = 10; T = 2;
    print(findParticipants(L, T));
     
# This code is contributed by AnkitRai01

C#




// C# program to find total number of
// candidates in an Exam from given last rank
// and Number of student at this last rank.
using System;
 
class GFG
{
 
    // Function to find total number of
    // Participants in Exam.
    static int findParticipants(int L, int T)
    {
        return (L + T - 1);
    }
 
    // Driver code
    public static void Main()
    {
        int L = 10, T = 2;
        Console.Write(findParticipants(L, T));
    }
}
 
// This code is contributed by Gowtham Yuvaraj

Javascript




<script>
 
// Javascript program to find total number of candidates
// in an Exam from given last rank
// and Number of student at this last rank.
 
// Function to find total number of
// Participants in Exam.
function findParticipants(L, T)
{
    return (L + T - 1);
}
 
// Driver code
var L = 10, T = 2;
document.write( findParticipants(L, T));
 
</script>
Output: 
11

 


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