range_of_integers_in_an_unsorted_string.md

In this kata, your task is to write a function that returns the smallest and largest integers in an unsorted string. In this kata, a range is considered a finite sequence of consecutive integers.

Input

Your function will receive two arguments:

• A string comprised of integers in an unknown range; think of this string as the result when a range of integers is shuffled around in random order then joined together into a string
• An integer value representing the size of the range

Output

Your function should return the starting (minimum) and ending (maximum) numbers of the range in the form of an array/list comprised of two integers.

Test Example

input_string = '1568141291110137'

mystery_range(input_string, 10) # [6, 15]

# The 10 numbers in this string are:
# 15 6 8 14 12 9 11 10 13 7
# Therefore the range of numbers is from 6 to 15

let inputString = '1568141291110137';

mysteryRange(inputString, 10) // [6, 15]

// The 10 numbers in this string are:
// 15 6 8 14 12 9 11 10 13 7
// Therefore the range of numbers is from 6 to 15

inputString := "1568141291110137"
MysteryRange(inputString, 10) // [6 15]

// The 10 numbers in this string are:
// 15 6 8 14 12 9 11 10 13 7
// Therefore the range of numbers is from 6 to 15

# For Elixir, return a tuple
input_string = "1568141291110137"

KataSolution.mystery_range(input_string, 10) # {6, 15}

# The 10 numbers in this string are:
# 15 6 8 14 12 9 11 10 13 7
# Therefore the range of numbers is from 6 to 15

string input_string = "1568141291110137";
KataSolution.MysteryRange(input_string, 10); // [6, 15]

// The 10 numbers in this string are:
// 15 6 8 14 12 9 11 10 13 7
// Therefore the range of numbers is from 6 to 15

input_string = '1568141291110137'

mystery_range(input_string, 10) # [6, 15]

# The 10 numbers in this string are:
# 15 6 8 14 12 9 11 10 13 7
# Therefore the range of numbers is from 6 to 15

Technical Details

• The maximum size of a range will be 100 integers
• The starting number of a range will be: 0 < n < 100
• Full Test Suite: 21 fixed tests, 100 random tests
• Use Python 3+ for the Python translation
• For JavaScript, require has been disabled and most built-in prototypes have been frozen (prototype methods can be added to Array and Function)
• All test cases will be valid

If you enjoyed this kata, be sure to check out my other katas