algorithm-practice/javascript/4_array-programs/uniqueValue.js at main · amit265/algorithm-practice · GitHub

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// 11. Remove Duplicate Elements from an Array (Unique Values)

function removeDuplicates() {

let a = [10, 20, 20, 30, 40, 50, 50];

let s = new Set(a);

let a1 = [...s];

return a1;

}

console.log(removeDuplicates());

//Using JavaScript forEach() with array.includes() method

let b = [10, 20, 30, 30, 40, 40];

let c = [];

b.forEach((elm) => {

if (!c.includes(elm)) {

c.push(elm);

}

});

console.log(c);

// Using JavaScript filter() Method with indexOf method

const d = [10, 20, 30, 30, 40, 40, 50, 60];

const e = d.filter((item, index) => d.indexOf(item) === index);

console.log(e);

// Using JavaScript reduce() with array.includes() method

const f = d.reduce((acc, curr) => {

if (!acc.includes(curr)) {

acc.push(curr);

}

return acc;

}, []);

console.log(f);

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