Easy to understand JavaScript solution
\nvar numMovesStonesII = function(stones) {\n    stones.sort((a, b) => a - b);\n    const { length: size } = stones;\n    const max = Math.max(stones[size - 1] 
```\nvar numMovesStonesII = function(stones) {\n    stones.sort((a, b) => a - b);\n    const { length: size } = stones;\n    const max = Math.max(stones[size - 1] - stones[1] - size + 2, stones[size - 2] - stones[0] - size + 2);\n    let start = 0;\n    let min = size;\n\n    for (let end = 1; end < size; end++) {\n        while (stones[end] - stones[start] + 1 > size) start += 1;\n        const already = end - start + 1;\n\n        if (already === size - 1 && stones[end] - stones[start] + 1 === size - 1) {\n            min = Math.min(min, 2);\n        } else {\n            min = Math.min(min, size - already);\n        }\n    }\n    return [min, max];\n};\n```
['JavaScript']