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- Sep 16, 2012

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- Primarily Uses
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**Built-in class Extension's v1.9.5**

Author Sarlecc

Author Sarlecc

**Introduction**

This script adds four new methods to the String class and three to the Array class more may be added in the future as I think of them.

**Updates:**

- v1.5 added three methods to the Array class and changed the name to Built-in class Extension's. (as it now handles more than just Strings)

- v1.6 added mix_up method to String class.

- v1.8 added search method to array class, added prime? method to Math module. Also due to the length of the script putting it up on mediafire.

- v1.9 added two new methods to the Array class. Also was having problems updating the script so the download link changed...

-v1.9.5 added new prime number checking algorithm. now check if a prime number is prime much faster (slower though on composite numbers)

**Features**

- Can remove every other character

- Can add characters every other character

- Can convert a string to random characters.

- Can mix the characters in a string.

- Can find the mean.

- Can find the median.

- Can find the range.

- Can search for certain numbers in an array

- Can determine if a number is a prime number

- Can find the id in an array with the lowest value

- Can find the id in an array with the highest value

**Screenshots**

None needed

**How to Use**

Place script below materials and above main

Code:

```
#==============================================================================
# String Extension by Sarlecc
#
# Strings
# "".remove_every(n, d) n = number, d = divsion (optional)
# "Example".remove_every(0, 3)# "".add_every(chars, n, d) chars = characters
# "Example".add_every("u", 2, 4)
# "".rand_chars
# "Example".rand_chars
# "".mix_up
#
# Arrays
# [].mean
# [].median
# [].range
# [].search(num1, num2) num2 is optional
#
# The following two methods return the id with the lowest or highest value in the given range
# both num1 and num2 are optional if omitted or values are to high then it will use 0 and the size
# of the array
# [].lowest(num1, num2)
# [].highest(num1, num2)
#
# Math
# Math.prime?(num)
# Math.prime2?(num)
# Math.prime2? is on average 2.5 times faster than Math.prime? if the number is prime; otherwise it is around 16-353 times slower
# its recommended that you use Math.prime? for checking thousands of numbers at a time as Math.prime2? will give an error (I assume
# that it has to do with the multithreading and attempting to do the next number while still doing the previous number).
# use Math.prime2? for checking larger primes
# Math.prime? time for number 18987964267331664557:
# 4521.762485 seconds
# Math.prime2? time for number 18987964267331664557:
# 1922.888493 seconds
# Math.prime? time for 106573388391:
# 0.000027-0.000028 seconds
# Math.prime2? time for 106573388391:
# 0.000452-0.009907 seconds
#==============================================================================
```

**Demo**

Yea none needed.

**Script**

Script

GitHub

**FAQ**

None yet.

**Credit**

- Sarlecc

**Terms**

**Author's Notes:**

The difference between rand_chars and mix_up is mix_up only returns a string containing characters in that string. The rand_chars method returns random characters that do not necessarily show up in the string. I'm guessing that mix_up might be good for anagrams/scrabble style games?

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