ints/math.go

@@ -72,16 +72,6 @@ func Norm64(i int64) int64 {
 	return 0
 }
 
-// NthRoot returns the nth root of i.
-func NthRoot(i, n int) int {
-	return int(math.Pow(float64(i), 1/float64(n)))
-}
-
-// NthRoot64 returns the nth root of i.
-func NthRoot64(i, n int64) int64 {
-	return int64(math.Pow(float64(i), 1/float64(n)))
-}
-
 // SubAbs subtracts a from b and returns the absolute value of the result.
 func SubAbs(a, b int) int {
 	if a > b {

ints/statistics.go

@@ -62,28 +62,6 @@ func IsPalindromic(n int) bool {
 	return true
 }
 
-// Len returns the number of digits of i (base 10, does not include a sign).
-func Len(i int) int {
-	return Len64(int64(i))
-}
-
-// Len64 returns the number of digits of i (base 10, does not include a sign).
-func Len64(i int64) int {
-	if i == 0 {
-		return 1
-	}
-	if i < 0 {
-		i = 0 - i
-	}
-
-	digits := 0
-	for i > 0 {
-		i /= 10
-		digits++
-	}
-	return digits
-}
-
 // Permutations returns all possible permutations of the the set integers.
 func Permutations(set []int) [][]int {
 	var n = len(set)