JoinNumber use a strings.Builder for concatenate the input string array.

Pad is delegated to pad/trim the given `data` to `n`, using the value `v`.

RemoveByIndex is delegated to remove the element of index s.

RemoveByValue is delegated to remove the element that contains the given value.

RemoveElement is delegated to delete the element related to index i.

SplitEqual is delegated to split the given data into slice of equal length.

Trim is delegated to trim the given `data` to `n`.