I need to compute power (10, n)
Is it OK to use Math.Pow (10, n)?
Or should I use a loop?
for (int i = 0; i < n; i++){
x*=10;
}
Which one is better? and why?
I need to compute power (10, n) Is it OK to use Math.Pow (10,
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I need to compute power (10, n)
Is it OK to use Math.Pow (10, n)?
Or should I use a loop?
for (int i = 0; i < n; i++){
x*=10;
}
Which one is better? and why?
If both base and exponent are integers you might consider not using Pow. But even in that case Pow is usually better because its more readable. If at least one is a floatingpoint value, use Pow.
If the exponent is 0.5 you should use Sqrt, and if the exponent is a small integer (2,3,4) expressing the formula with multiplications is faster, but less readable.
If you want to implement fast exponentiation with an integer exponent the Square-and-Multiply algorithm and not a simple loop might be what you want. But in most scenarios Pow is still faster.