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Programming-Idioms

History of Idiom 31 > diff from v52 to v53

Edit summary for version 53 by miguel:
New Kotlin implementation by user [miguel]
↷

Version 52

2019-09-26, 19:25:06

Version 53

2019-09-26, 21:54:17

Idiom #31 Recursive factorial (simple)

Create recursive function f which returns the factorial of non-negative integer i, calculated from f(i-1)

Idiom #31 Recursive factorial (simple)

Create recursive function f which returns the factorial of non-negative integer i, calculated from f(i-1)

Code 
fun f(i: Int): Int = when (i) {
    0 -> 1
    else -> i * f(i - 1)
}