Locate consecutive characters in an array's string and swap them out

Here is an example array: arr=['Hello World', 'Bye World', 'Useless World']

I am looking to utilize JavaScript to identify consecutive characters that are the same ("ss") and substitute them with an asterisk (*)

Answer №1

There are numerous ways to achieve this, but my preferred method would involve using regex:

arr.map(function(item){ return item.replace(/(.)\1+/g, '*') } )

The map function iterates through the array, providing each item to the function as a parameter one at a time. Since the items are strings, you can invoke the replace function on them. I passed the regular expression as the first argument to the replace function and the replacement (star) as the second argument. For more information on regular expressions and a useful playground, check out here

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