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Old 10-20-09   #1 (permalink)
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Default Input 5, output 7 - without using ifs
How do you do this? Also the reverse - input 7, output 5.

In any language. Pseudocode is fine too.

I was asked this question and couldn't come up with an answer.
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Old 10-20-09   #2 (permalink)
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input x

y=12-x

output y



you could also two while loops, but that is cheating and not optimal.

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Old 10-20-09   #3 (permalink)
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It's so simple I didn't think of it. DERP.

Well, thank you.
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Old 10-20-09   #4 (permalink)
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no problem. :-) i just did a quick linearization of the points. math is your friend. :-)

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Old 4 Weeks Ago   #5 (permalink)
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Code:
switch(input)
{
    case 5:
        return 7;
    case 7:
        return 5;
}
No ifs involved.
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Old 4 Weeks Ago   #6 (permalink)
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Quote:
Originally Posted by The Bartender Paradox View Post
Code:
switch(input)
{
    case 5:
        return 7;
    case 7:
        return 5;
}
No ifs involved.
that is cheating just like my "while" idea. :-P it is still based on "if" logic.

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Old 4 Weeks Ago   #7 (permalink)
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Quote:
Originally Posted by kevingreenbmx View Post
that is cheating just like my "while" idea. :-P it is still based on "if" logic.
It's based on conditional jumps "logic" as are if statements, but switches are not if statements. The OP did not say "without using conditional jumps," he said "without using ifs."
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Old 4 Weeks Ago   #8 (permalink)
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int array[6];
array[5] = 7;
input x;
output array[x];
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Old 4 Weeks Ago   #9 (permalink)
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Quote:
Originally Posted by The Bartender Paradox View Post
It's based on conditional jumps "logic" as are if statements, but switches are not if statements. The OP did not say "without using conditional jumps," he said "without using ifs."
Well, I meant no conditionals
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Old 4 Weeks Ago   #10 (permalink)
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Quote:
Originally Posted by The Bartender Paradox View Post
Code:
switch(input)
{
    case 5:
        return 7;
    case 7:
        return 5;
}
No ifs involved.
Bahahaha, that's exactly what sprang into my mind.

~Gooda~
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