หา mode อันดับ 2 ใน array - Gaoey/exercises GitHub Wiki
example
const x = [1,2,2,2,3,4,5,5,5,5,6,6,6,6,6]
result = 5
js
const input = [1,2,2,2,3,3,3,3,4,4,4,4,6]
const temp = input.map((v,i)=>{
if(v === input[i+1]) {
return undefined
}
return input.filter(a => a == v)
}).filter(v => v !== undefined)
const x = temp.map(v=>{
return {
value: v[0],
size: v.length
}
})
const sortT = x.sort((a, b) => a.size - b.size)
const result = sortT[sortT.length-2].value