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How to remove duplicate subarrays from a multi-dimensional array in TypeScript

1 Answer

0 votes
function arrayUnique(arr: Array<Array<string>>): Array<Array<string>> {
    const uniqueSet: Set<string> = new Set(arr.map(subArray => JSON.stringify(subArray)));

    return Array.from(uniqueSet).map(subArray => JSON.parse(subArray));
}

const array: Array<Array<string>> = [
    ["abc", "def"],
    ["ghi", "jkl"],
    ["mno", "pqr"],
    ["abc", "def"],
    ["ghi", "jkl"],
    ["mno", "pqr"]
];

const uniqueArray: string[][] = arrayUnique(array);

console.log(uniqueArray);



/*
run:

[["abc", "def"], ["ghi", "jkl"], ["mno", "pqr"]] 

*/

 



answered Apr 7, 2025 by avibootz
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