Which are in?
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.
Reply
//method 1:
inArray = (a1, a2) => {
var str = a2.join(' ');
return a1.filter(s => str.indexOf(s) !== -1).sort();
}
//method 2:
inArray = (a1, a2) => {
return array1
.filter(a1 => array2.find(a2 => a2.match(a1)))
.sort()
}
