arr = [
[500,1000],
[2000,4000],
[5000,8000],
[8000,9000],
[10000,12000],
[14000,20000],
[23000,30000],
]the range of intervals represented by the known array arr [500 ~ (1, 000)]
1 the same parts should be merged into 5000-9000
.2 find the residual interval of the residual space, for example, 0500 1000-2000 4000-5000. Wait
const arr = [
[500,1000],
[2000,4000],
[5000,8000],
[8000,9000],
[10000,12000],
[14000,20000],
[23000,30000],
];
let newArr = arr.reduce((a,v)=>{
if(typeof(a[0])=="number"){
if(a[1] == v[0]) return [a[0],v[1]]
//console.log([a,v])
return [a,v]
}else{
if(a[a.length-1][1]!=v[0]) {
a.push(v)
}else{
a[a.length-1][1] = v[1]
}
return a
}
})
console.log(newArr)
let resArr = newArr.reduce((a,v)=>{
if(typeof(a[0])=="number"){
if(a[0]!=0) return [[0,a[0]],[a[1],v[0]],[v[1],v[1]]]
return [[a[1],v[0]],[v[1],v[1]]]
}else{
a[a.length-1][1] = v[0];
if(a.length!=newArr.length) a.push([v[1],v[1]])
}
return a
})
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