const _isFibonacci = (array) => { // 补全代码 if (array.length < 3 || array[0] !== 0 || array[1] !== 1) return false; return array.every((item, index) => { return index < 3 ? array[0] === 0 && array[1] === 1 && array[2] === 1 : item === array[index - 1] + array[index - 2]; }); };