wqvbwang

``` str .split(',') .map(Number) .reduce((r,v,i,arr)=>r+(v-arr[i+1]===-1?arr[i-1]-v===-1?'':v+'~':v+','),'') .replace(/,$/,'') ```

```javascript function countMax(str) { let count = 1; return Array .from({ ...str, length: str.length }) .reduce((r, c, i, arr) => { if (c === arr[i + 1]) { count++; }...

```javascript function unique(arr) { const result = []; const isArray = Array.isArray; for (let v of arr) { result.every(e => !equal(v, e)) && result.push(v); } return result; function equal(a, b)...