Given four integers ‘a’, ‘b’, ‘y’ and ‘x’, where ‘x’ can only be either zero or one. Your task is as follows:
- If ‘x’ is zero assign value ‘a’ to the variable ‘y’
- If ‘x’ is one assign value ‘b’ to the variable ‘y’.
It is not allowed to use any conditional operator (including the ternary operator).
Examples :
Input : a = 3, b = 7, x = 1 Output : y = 7 Input : a = 3, b = 7, x = 0 Output : y = 3
The idea is to create an array of size two where the first element is ‘a’ and the second element is ‘b’. We use x as an index in the array.
C++
// CPP program to pick a value among two // according to value of a third variable. #include <iostream> 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 |
PHP
<?php // PHP 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) { $arr = array($a, $b); return($arr[$x]); } // Driver code $y = assignValue(3, 7, 0); echo $y; // This code is contributed by ajit ?> |
Output :
3
Alternate Solution :
C++
// C++ program to pick a value among two // according to value of a third variable. #include <iostream> 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 |
Output :
3
Time Complexity: O(1)
Thanks to Forrest Smith for suggesting the above solution.
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