查找击球手的击球平均值

给定三个整数runs ， matchs和not-out分别代表计分的奔跑次数，击球手打的局数和保持击球的次数，任务是计算击球手的击球平均值。

$\text{Batting Average} = \frac{\text{Runs Scored}}{\text{Number of dismissals}}$
where 
$\text{Number of dismissals = Number of innings - Number of innings he remained Not Out}$
 

注意：如果击球手从未被解雇，请打印“ NA”，因为可以定义无平均值。

例子：

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 
 

方法：
请按照以下步骤解决问题：

1. 计算被解雇的次数，等于比赛-notout 。
2. 计算平均击球次数，等于运行次数/(比赛次数-不在) 。

下面是上述方法的实现：

C++

// C++ program to calculate
// the average of a batsman
#include 
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

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

 
// 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
 

输出：

50

时间复杂度： O(1)
辅助空间： O(1)