Simple Fun #6: Is Infinite Process?.js

/*
Task
Given integers a and b, determine whether the following pseudocode results in an infinite loop

 while (a !== b){
     a++
     b--
 }
Assume that the program is executed on a virtual machine which can store arbitrary long numbers and execute forever.

Example
For a = 2 and b = 6, the output should be

isInfiniteProcess(a, b) = false (or equivalent in PHP)

For a = 2 and b = 3, the output should be

isInfiniteProcess(a, b) = true (or equivalent in PHP)

Input/Output
[input] integer a

Constraints: 0 ≤ a ≤ 100.

[input] integer b

Constraints: 0 ≤ b ≤ 100.

[output] a boolean value

true if the pseudocode will never stop, false otherwise.
*/
function isInfiniteProcess(a, b) {
    if (b<a)           return true;
    if ((b-a)%2==1)    return true;
    return false;  
}