Dados 4 enteros a, b, y y x, donde x puede asumir los valores de 0 o 1 únicamente. Se hace la siguiente pregunta:
If 'x' is 0, Assign value 'a' to variable 'y' Else (If 'x' is 1) Assign value 'b' to variable 'y'.
Nota: – No está permitido utilizar ningún operador condicional (incluido el operador ternario) ni ningún operador aritmético (+, -, *, /).
Ejemplos:
Input : a = 5 , b = 10, x = 1 Output : y = 10 Input : a = 5, b = 10 , x = 0 Output : y = 5
Preguntado en: Entrevista de Google
Solución 1:
Una idea es simplemente almacenar tanto ‘a’ como ‘b’ en una array en el índice 0 y 1, respectivamente. Luego almacene el valor en ‘y’ tomando ‘x’ como índice.
A continuación se muestra la implementación del enfoque anterior:
C++
// C/C++ program to assign value to y according
// to value of x
#include <iostream>
using namespace std;
// Function to assign value to y according
// to value of x
int assignValue(int a, int b, int x)
{
int y;
int arr[2];
// Store both values in an array
// value 'a' at 0th index
arr[0] = a;
// Value 'b' at 1th index
arr[1] = b;
// Assign value to 'y' taking 'x' as index
y = arr[x];
return y;
}
// Driver code
int main()
{
int a = 5;
int b = 10;
int x = 0;
cout << "Value assigned to 'y' is "
<< assignValue(a, b, x);
return 0;
}
Java
// Java program to assign value to y according
// to value of x
public class GFG {
static int assignValue(int a, int b, int x)
{
int y;
int arr[] = new int[2];
// Store both values in an array
// value 'a' at 0th index
arr[0] = a;
// Value 'b' at 1th index
arr[1] = b;
// Assign value to 'y' taking 'x' as index
y = arr[x];
return y;
}
// Driver Method
public static void main(String[] args)
{
int a = 5;
int b = 10;
int x = 0;
System.out.println("Value assigned to 'y' is "
+ assignValue(a, b, x));
}
}
Python3
# Python 3 program to assign value to
# y according to value of x
# Function to assign value to y
# according to value of x
def assignValue(a, b, x):
arr = [0] * 2
# Store both values in an array
# value 'a' at 0th index
arr[0] = a
# Value 'b' at 1th index
arr[1] = b
# Assign value to 'y' taking 'x'
# as index
y = arr[x]
return y
# Driver code
if __name__ == "__main__":
a = 5
b = 10
x = 0
print("Value assigned to 'y' is",
assignValue(a, b, x))
# This code is contributed by ita_c
C#
// C# program to assign value to y according
// to value of x
using System;
public class GFG {
static int assignValue(int a, int b, int x)
{
int y;
int[] arr = new int[2];
// Store both values in an array
// value 'a' at 0th index
arr[0] = a;
// Value 'b' at 1th index
arr[1] = b;
// Assign value to 'y' taking 'x'
// as index
y = arr[x];
return y;
}
// Driver Code
public static void Main()
{
int a = 5;
int b = 10;
int x = 0;
Console.Write("Value assigned to "
+ "'y' is " + assignValue(a, b, x));
}
}
// This code is contributed by nitin mittal.
PHP
<?php
// PHP program to assign value
// to y according to value of x
// Function to assign value
// to y according to value of x
function assignValue($a, $b, $x)
{
$y;
$arr = array(0, 0);
// Store both values in an array
// value 'a' at 0th index
$arr[0] = $a;
// Value 'b' at 1th index
$arr[1] = $b;
// Assign value to 'y'
// taking 'x' as index
$y = $arr[$x];
return $y;
}
// Driver code
$a = 5;
$b = 10;
$x = 0;
echo "Value assigned to 'y' is " .
assignValue($a, $b, $x);
// This code is contributed by Anuj_67
?>
Javascript
<script>
// javascript program to assign value to y according
// to value of x
function assignValue(a , b , x) {
var y;
var arr = Array(2);
// Store both values in an array
// value 'a' at 0th index
arr[0] = a;
// Value 'b' at 1th index
arr[1] = b;
// Assign value to 'y' taking 'x' as index
y = arr[x];
return y;
}
// Driver Method
var a = 5;
var b = 10;
var x = 0;
document.write("Value assigned to 'y' is "
+ assignValue(a, b, x));
// This code is contributed by todaysgaurav
</script>
Value assigned to 'y' is 5
Solución 2:
Usando el operador AND bit a bit.
C++
// C/C++ program to assign value to y according
// to value of x
#include <iostream>
using namespace std;
// Driver Code
int main()
{
int a = 5;
int b = 10;
int x = 1;
int y;
if (x & 1)
y = b;
else
y = a;
cout << "Value assigned to 'y' is " << y << endl;
return 0;
}
Java
// Java program to assign value to y according
// to value of x
import java.io.*;
class GFG
{
// Driver Code
public static void main (String[] args)
{
int a = 5;
int b = 10;
int x = 1;
int y;
if ((x & 1) != 0)
y = b;
else
y = a;
System.out.println("Value assigned to 'y' is " + y);
}
}
// This code is contributed by avanitrachhadiya2155
Python3
# Python3 program to assign value to y
# according to value of x
# Driver Code
a = 5
b = 10
x = 1
y = 0
if ((x & 1) != 0):
y = b
else:
y = a
print("Value assigned to 'y' is ", y)
# This code is contributed by ab2127
C#
// C# program to assign value to y according
// to value of x
using System;
public class GFG
{
// Driver Code
static public void Main ()
{
int a = 5;
int b = 10;
int x = 1;
int y;
if ((x & 1) != 0)
y = b;
else
y = a;
Console.WriteLine("Value assigned to 'y' is " + y);
}
}
// This code is contributed by rag2127
Javascript
<script>
// Javascript program to assign value to y according
// to value of x
// Driver Code
var a = 5;
var b = 10;
var x = 1;
var y;
if ((x & 1) != 0)
y = b;
else
y = a;
document.write("Value assigned to 'y' is " + y);
// This code contributed by Rajput-Ji
</script>
Value assigned to 'y' is 10
Referencia: https://www.careercup.com/question?id=5135296679116800
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Artículo escrito por GeeksforGeeks-1 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA