Which_are_in.md

CodeWars Python Solutions

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Which are in?

Definition

Given two arrays of strings a1 and a2 return a sorted array r in lexicographical order of the strings of a1 which are substrings of strings of a2.

Example 1: a1 = ["arp", "live", "strong"]

a2 = ["lively", "alive", "harp", "sharp", "armstrong"]

returns ["arp", "live", "strong"]

Example 2: a1 = ["tarp", "mice", "bull"]

a2 = ["lively", "alive", "harp", "sharp", "armstrong"]

returns []

Notes:

• Arrays are written in "general" notation. See "Your Test Cases" for examples in your language.
• In Shell bash a1 and a2 are strings. The return is a string where words are separated by commas.
• Beware: r must be without duplicates.
• Don't mutate the inputs.

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Given Code

def in_array(array1, array2):
    pass

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Solution

def in_array(array1, array2):
    arr = []
    for a2 in array2:
        for a1 in array1:
            if a1 in a2 and a1 not in arr:
                arr.append(a1)
    return sorted(arr)

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