Best Practice to Avoid Too Many If Statements in ios

Question

You all might have came across the scenarios like the following ones:

-(int) fightMath(int one, int two) {

if(one == 0 && two == 0) { result = 0; }
else if(one == 0 && two == 1) { result = 0; }
else if(one == 0 && two == 2) { result = 1; }
else if(one == 0 && two == 3) { result = 2; }
else if(one == 1 && two == 0) { result = 0; }
else if(one == 1 && two == 1) { result = 0; }
else if(one == 1 && two == 2) { result = 2; }
else if(one == 1 && two == 3) { result = 1; }
else if(one == 2 && two == 0) { result = 2; }
else if(one == 2 && two == 1) { result = 1; }
else if(one == 2 && two == 2) { result = 3; }
else if(one == 2 && two == 3) { result = 3; }
else if(one == 3 && two == 0) { result = 1; }
else if(one == 3 && two == 1) { result = 2; }
else if(one == 3 && two == 2) { result = 3; }
else if(one == 3 && two == 3) { result = 3; }

return result;

}

In short, how to effectively simplify the above scenario in Objective-C's ambience?

Any Suggestions/Ideas/Solutions ? Cheers :)

Edit: For reference , scenario taken from here.I hope this question might save even one sec of needy developer.

Answer 1

Objective C is built over C. So any good C solution will be also appropriate for Objective C. Like

int result[][4] = {
    { 0, 0, 1, 2 },
    { 0, 0, 2, 1 },
    { 2, 1, 3, 3 },
    { 1, 2, 3, 3 }
};
return result[one][two]

As I know there is no Objective C - specific good practices for such problems.