Javascript Challenges - Second Value

Javascript Challenges - Second Value
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[MahadyHasan]

Challenges are just wonderful!! why people not like this!

[jdevcast]

I like the use of set. It didn't immediately spring to mind.

[milannis]

Didn't know for new Set(), thanks...

[abdelkarimabouzi]

const secondVal = (arr) => {
let sorted = [...new Set(arr.sort((a, b) => a - b))];
switch (sorted.length) {
case 1:
case 2:
return sorted.join(", ");
break;
default:
return [...new Set([sorted[1], sorted[sorted.length-2]])].join(", ");
break;
};
};

[mominahmad]

improvement:
if(values.length > 1){
return `${values[1]} ${values[values.length - 2]}
}

[nandakumart]

function secondLargeAndSmall(arr) {
if (arr.length == 0) {
return `array must need 2 elements`
} else if (arr.length == 1) {
return arr
}
else if (arr.length == 2) {
if (arr[0] < arr[1]) {
return [arr]
}
return [arr[1], arr[0]]
} else {
let min1 = Infinity
let min2 = Infinity
let max1 = -Infinity
let max2 = -Infinity
for (let val of arr) {
if (val < min1) {
min2 = min1
min1 = val
} else if (val < min2 && val != min1) {
min2 = val
}
if (val > max1) {
max2 = max1
max1 = val
} else if (val > max2 && val != max1) {
max2 = val
}
}
return [min2, max2]
}
}

[felixpaniagua]

function secondValue(arr)
{
let newArray = [...new Set(arr.sort((a, b)=> a - b))];

if(newArray.length <= 2)
return arr;

return [...new Set([newArray.at(1), newArray.at(-2)])]
}


console.log(secondValue([4, 2]));
console.log(secondValue([11, 44, 22]));
console.log(secondValue([3, 2, 88, 3, -11, 67, 7]));