题解 | #移除数组中的元素# 的两种方案

用递归

function removeWithoutCopy(arr, item) {
    let index = arr.findIndex(cur => cur === item)
    if(index < 0) return arr
    arr.splice(index, 1)
    return removeWithoutCopy(arr, item)
}

用死循环（迭代）

function removeWithoutCopy(arr, item) {
    let index = arr.findIndex(cur => cur === item)
    while(index >= 0){
        if(index < 0) return arr
        arr.splice(index, 1)
        index = arr.findIndex(cur => cur === item)
    }
    return arr
}