JavaScript 数组扁平化并去重
function arrayFlatAndRemoveRepeat(array){
return array.flat(Infinity).reduce((count,current)=> count.some(item=> item === current) ? count : [...count,current],[])
}
arrayFlatAndRemoveRepeat([1,2,3,[4,[5,[6,7,6],4,3,2]]])
// 输出[1,2,3,4,5,6,7]