Airthmetic statement shortcuts

[Java Tip]

There are different ways of writing arithmetic statements.

Code:

i = i + 1;
i+= 1; // shortcut

i = i/2;
i /= 2;         // shortcut

i = i*2;
i *= 2;         // shortcut

i = i-1;
i -= 1;         // shortcut

It has no affect on the performance as long as left hand side variable does not require computation. If left hand side variable requires computation, then short form is ideal.

Code:

myArray[getCurrentndex()] = myArray[getCurrentndex()] + 1; 
// getCurrentndex() is called 2 times

myArray[getCurrentndex()] += 1;
// getCurrentndex() is called once