JavaScript: developing an algorithm to identify and eliminate duplicate strings

Consider the following JS array:

0 - Star Wars: A New Hope
1 - Star Wars: The Empire Strikes Back
2 - Star Wars: Return of the Jedi
3 - Star Wars: A New Hope (1977)
4 - Star Wars: Return of the Jedi (1983)
5 - Star Wars: Attack of the Clones
6 - Star Wars: Revenge of the Sith
7 - Star Wars: The Phantom Menace
8 - Star Wars: Attack of the Clones (2002)
9 - Star Wars: Revenge of the Sith (2005)

We know that some items are similar. Below is the desired array output:

0 - Star Wars: A New Hope
1 - Star Wars: The Empire Strikes Back
2 - Star Wars: Return of the Jedi
5 - Star Wars: Attack of the Clones
6 - Star Wars: Revenge of the Sith
7 - Star Wars: The Phantom Menace

What approach can be used to exclude the similar items from the array?

Thank you

javascriptarraysstringsimilarity

Answer №1

To streamline the titles, you can extract and remove the content within parentheses, place it in a Set to eliminate any duplicates, and then convert it back into an array:

movies = [...new Set(movies.map(movie => movie.replace(/\s*\(\d+\)\s*$/g, '')))];


movies = [
'The Big Bang Theory - Fourth Season',
'The Big Bang Theory - Third Season',
'The Big Bang Theory - Second Season',
'The Big Bang Theory - First Season',
'The Big Bang Theory - First Season (2007)',
'The Big Bang Theory - Fourth Season (2010)',
'The Big Bang Theory - Second Season (2008)',
'The Big Bang Theory - Third Season (2009)',
'The Big Bang Theory: Access All Areas (2012)',
'The Big Bang Theory: It All Started with a Big Bang (2012)'];

movies = [...new Set(movies.map(movie => movie.replace(/\s*\(\d+\)\s*$/g, '')))];

console.log(movies);

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