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README.md docs(new subjects): new readmes for the exams exercises 2 years ago

README.md

listsize

Instructions

Write a function ListSize that returns the number of elements in a linked list l.

Expected function and structure

type NodeL struct {
	Data interface{}
	Next *NodeL
}

type List struct {
	Head *NodeL
	Tail *NodeL
}

func ListSize(l *List) int {

}

Usage

Here is a possible program to test your function :

package main

import "fmt"

func ListPushFront(l *List, data interface{}) {
	n := &NodeL{Data: data}
	if l.Head == nil {
		l.Head = n
		l.Tail = n
	} else {
		l.Head, n.Next = n, l.Head
	}
}

func main() {
	link := &List{}

	ListPushFront(link, "Hello")
	ListPushFront(link, "2")
	ListPushFront(link, "you")
	ListPushFront(link, "man")

	fmt.Println(ListSize(link))
}

And its output :

$ go run .
4
$