Find the Batting Average of a batsman

Given three integers runs, matches, and not-out representing the number of runs scored, number of innings played by the batsman and number of times he remained Not Out respectively, the task is to calculate the Batting Average of the batsman. 

where 

Note: If the batsman was never dismissed, print “NA” as the no average can be defined.

Examples:

Input: runs = 10000, matches = 250, not-out = 50 
Output: 50 
Explanation:
Number of times batsman was dismissed = 250 – 50 = 200 
Batting Average = 10000 / 200 = 50.

Input: runs = 100, matches = 1, not-out = 1 
Output: NA 

Approach:
Follow the steps below to solve the problem: 

1. Calculate the number of dismissals, equal to matches – notout.
2. Calculate the Batting Average, equal to runs/ (matches – notout).

Below is the implementation of the above approach: 

C++

// C++ program to calculate
// the average of a batsman
#include <bits/stdc++.h>
using namespace std;

// Function to find the average
// of a batsman
double averageRuns(int runs,
                   int matches,
                   int notout)
{
    // Calculate number of
    // dismissals
    int out = matches - notout;

    // check for 0 times out
    if (out == 0)
        return -1;

    // Calculate batting average
    double avg = double(runs) / out;

    return avg;
}

// Driver Program
int main()
{
    int runs = 10000;
    int matches = 250;
    int notout = 50;

    double avg
        = averageRuns(
            runs, matches, notout);

    if (avg == -1)
        cout << "NA";
    else
        cout << avg;

    return 0;
}

Java

import java.io.*;
// Java program to calculate
// the average of a batsman
public class GFG {

    // Function to find the average
    // of a batsman
    static int averageRuns(int runs, int matches,
                           int notout)
    {

        // Calculate number of
        // dismissals
        int out = matches - notout;

        // Check for 0 times out
        if (out == 0)
            return -1;

        // Calculate batting average
        int avg = (runs) / out;

        return avg;
    }

    // Driver code
    public static void main(String[] args)
    {
        int runs = 10000;
        int matches = 250;
        int notout = 50;

        int avg = averageRuns(runs, matches, notout);
        if (avg == -1)
            System.out.print("NA");
        else
            System.out.print(avg);
    }
}

// This code is contributed by Ritik Bansal

Python3

# Python3 program to calculate
# the average of a batsman

# Function to find the average
# of a batsman
def averageRuns(runs, matches, notout):

    # Calculate number of
    # dismissals
    out = matches - notout;

    # check for 0 times out
    if (out == 0):
        return -1;

    # Calculate batting average
    avg = runs // out;

    return avg;

# Driver Program
runs = 10000;
matches = 250;
notout = 50;

avg = averageRuns(runs, matches, notout);

if (avg == -1):
    print("NA");
else:
    print(avg);

# This code is contributed by Akanksha_rai

C#

// C# program to calculate
// the average of a batsman
using System;
class GFG{

// Function to find the average
// of a batsman
static int averageRuns(int runs,
                       int matches,
                       int notout)
{

    // Calculate number of
    // dismissals
    int out1;
    out1 = matches - notout;

    // Check for 0 times out
    if (out1 == 0)
        return -1;

    // Calculate batting average
    int avg = (runs) / out1;

    return avg;
}

// Driver code
public static void Main (string[] args)
{
    int runs = 10000;
    int matches = 250;
    int notout = 50;

    int avg = averageRuns(runs, matches,
                                notout);
    if (avg == -1)
        Console.Write("NA");
    else
        Console.Write(avg);
}
}

// This code is contributed by rock_cool

Javascript

<script>

// Javascript program to calculate
// the average of a batsman

// Function to find the average
// of a batsman
function averageRuns(runs, matches, notout)
{

    // Calculate number of
    // dismissals
    let out1;
    out1 = matches - notout;

    // Check for 0 times out
    if (out1 == 0)
        return -1;

    // Calculate batting average
    let avg = parseInt((runs) / out1, 10);

    return avg;
}

// Driver code
let runs = 10000;
let matches = 250;
let notout = 50;
let avg = averageRuns(runs, matches, notout);

if (avg == -1)
    document.write("NA");
else
    document.write(avg);

// This code is contributed by divyesh072019

</script>

Output

50

Time Complexity: O(1) 
Auxiliary Space: O(1)