SW 심화과정 D-4

# General Type LinkedList class 짜기

 

class Node <T extends Object> { T data = null; Node<T> next = null; Node(T i, Node<T> n){ this.data = i; this.next = n; } } class LinkedList <T extends Object>{ Node<T> head = null; Node<T> tail = null; public LinkedList(){ this.head = new Node<T>(null, null); this.tail = this.head; } void push(T i){ tail.next = new Node<T>(i,null); tail = tail.next; } void pop(){ head = head.next; } void print() { for(Node<T> t = head.next; t !=null; t=t.next){ System.out.println(t.data); } } } public class Test054{ public static void main(String[] args){ LinkedList<String> l = new LinkedList<String>(); l.push("Hello"); l.push("World"); l.pop(); l.print(); } }

 

 

# String indexof 함수 구현하기

 

class Temp { int ob; static public int indexOf(char[] sentence, char[] address){ int d = 0; for(int i=0; i<sentence.length; i++){ if(sentence[i] == address[0]){ d = i; } } return d; } } public class Test061{ public static void main(String[] args){ // 접근하려면 static 함수이다. int idx = Temp.indexOf( "HelloWorld".toCharArray(), "or".toCharArray()); // String indexOf와 동일한 동작을 하도록 만들어주세요. System.out.println( idx) ; } }