编程难题(在没有任何控制语句的情况下分配值)

给定四个整数“ a”，“ b”，“ y”和“ x”，其中“ x”只能是零或一。您的任务如下：

• 如果“ x”为零，则将值“ a”分配给变量“ y”
• 如果“ x”是一个，则将值“ b”分配给变量“ y”。

不允许使用任何条件运算符(包括三元运算符)。
例子 ：

Input  : a = 3, b = 7,  x = 1
Output : y = 7

Input : a = 3, b = 7, x = 0
Output : y = 3

这个想法是创建一个大小为2的数组，其中第一个元素为’a’，第二个元素为’b’。我们使用x作为数组中的索引。

C++

// CPP program to pick a value among two
// according to value of a third variable.
#include 
using namespace std;
 
// Returns a if x is 0 and returns
// b if x is 1.
int assignValue(int a, int b, bool x)
{
    int arr[] = {a, b};
 
    return(arr[x]);
}
 
// Driver code
int main()
{
    int y = assignValue(3, 7, 0);
    cout << y;
    return 0;
}

Java

// Java program to pick a value among two
// according to value of a third variable.
class GFG {
 
    // Returns a if x is 0 and returns
    // b if x is 1.
    static int assignValue(int a, int b, int x)
    {
        int arr[] = {a, b};
 
        return (arr[x]);
    }
 
    // Driver code
    public static void main(String[] args)
    {
        int y = assignValue(3, 7, 0);
        System.out.println(y);
    }
}
 
// This code is contributed by  Smitha Dinesh Semwal.

Python3

# Python 3 program to
# pick a value among two
# according to value
# of a third variable.
 
# Returns a if x
# is 0 and returns
# b if x is 1.
def assignValue(a, b, x):
 
    arr = [a, b]
    return(arr[x])
 
 
# Driver code
y = assignValue(3, 7, 0)
 
print(y)
 
# This code is contributed by
# Smitha Dinesh Semwal

C#

// C# program to pick a value among two
// according to value of a third variable.
using System;
 
public class GFG {
  
    // Returns a if x is 0 and returns
    // b if x is 1.
    static int assignValue(int a, int b, int x)
    {
        int []arr = {a, b};
  
        return (arr[x]);
    }
  
    // Driver code
    public static void Main()
    {
        int y = assignValue(3, 7, 0);
        Console.WriteLine(y);
    }
}
// This code is contributed by PrinciRaj1992

Javascript

// javascript program to pick a value among two
// according to value of a third variable.   
// Returns a if x is 0 and returns
    // b if x is 1.
    function assignValue(a , b , x) {
        var arr = [ a, b ];
 
        return (arr[x]);
    }
 
    // Driver code
     
        var y = assignValue(3, 7, 0);
        document.write(y);
 
// This code is contributed by todaysgaurav

输出 ：

3

替代解决方案：

C++

// C++ program to pick a value among two
// according to value of a third variable.
#include 
using namespace std;
 
// Returns a if x is 0 and returns
// b if x is 1.
int assignValue(int a, int b, bool x)
{  
    return (1 - x)*a + x*b;
}
 
// Driver code
int main()
{
    int y = assignValue(3, 7, 0);
    cout << y;
    return 0;
}

Java

// Java program to pick a value among two
// according to value of a third variable.
import java.io.*;
 
class GFG {
 
// Returns a if x is 0 and returns
// b if x is 1.
static int assignValue(int a, int b, int x)
{
    return (1 - x) * a + x * b;
}
         
// Driver code
public static void main (String[] args)
{
    int y = assignValue(3, 7, 0);
         
    System.out.println(y);
}
}
 
// This code is contributed by ShubhamCoder

Python3

# Python3 program to pick a value among two
# according to the value of a third variable.
 
# Returns a if x is 0 and returns
# b if x is 1.
def assignValue(a, b, x):
     
    return (1 - x) * a + x * b
     
# Driver code
y = assignValue(3, 7, 0)
print(y)
 
# This code is contributed by ShubhamCoder

C＃

// C# program to pick a value among two
// according to value of a third variable.
using System;
 
class GFG {
 
// Returns a if x is 0 and returns
// b if x is 1.
static int assignValue(int a, int b, int x)
{
    return (1 - x) * a + x * b;
}
     
// Driver code
public static void Main()
{
    int y = assignValue(3, 7, 0);
     
    Console.WriteLine(y);
}
}
 
// This code is contributed by ShubhamCoder

Java脚本

 
// Javascript program to pick a value among two
// according to value of a third variable.
 
    // Returns a if x is 0 and returns
    // b if x is 1.
    function assignValue(a , b , x) {
        return (1 - x) * a + x * b;
    }
 
    // Driver code
     
        var y = assignValue(3, 7, 0);
 
        document.write(y);
 
// This code contributed by Rajput-Ji
 

输出 ：

3

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