Remove Duplicates from String Problem Statement

You are provided a string STR of length N, consisting solely of lowercase English letters.

Your task is to remove all duplicate occurrences of characters in the string.

Example:

Input:

abcadeecfb

Output:

abcdef

Explanation:

After removing duplicates, the string becomes abcdef.

Constraints:

1 ≤ N

Question

You are provided a string STR of length N, consisting solely of lowercase English letters.

Your task is to remove all duplicate occurrences of characters in the string.

abcadeecfb

abcdef

After removing duplicates, the string becomes abcdef.

Accepted Answer

Remove duplicate occurrences of characters in a given string of lowercase English letters.

Use a hash set to keep track of characters already seen.
Iterate through the string and add each character to the result if it's not in the hash set.
Return the result string after removing duplicates.

Accepted Answer

const inputString='abcadeecfb';

const removeDuplicates=[...new Set(inputString)].join('')

console.log(removeDuplicates)

//output will be :abcdef

OR

function removeDuplicates(str) {

let uniqueChars = str.split('').filter((ch, index) => {

return str.indexOf(ch) === index;

});

return uniqueChars.join('');

}

// Example usage:

let inputString = 'abcadeecfb';

let outputString = removeDuplicates(inputString);

console.log(outputString);

Accepted Answer

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