算法：在单链表中删除指定值的节点

算法

版本：1
作者：陈小默

思路：通过两个指针实现

fun <T> delete(node: Node<T>, value: T): Node<T>? {
    var head: Node<T>? = node
    while (head != null) {
        if (head.value != value) break
        head = head.next
    }
    if (head == null) return null
    var pre = head
    var cur = pre.next
    while (cur != null) {
        if (cur.value == value)
            pre!!.next = cur.next
        else
            pre = cur
        cur = cur.next
    }
    return head
}