View difference between Paste ID: <a href="/LpPih8cG">LpPih8cG</a> and <a href="/tM9xfiXT">tM9xfiXT</a>

package projekt;
1		package projekt;
2
3		public class Plus extends Operator {
4
5		@Override
6		public int prioritet() {
7		// TODO Auto-generated method stub
8		return 2;
9		}
10
11		@Override
12		public void evaluera(Stack operand) {
13		double ett=Double.parseDouble((String)operand.pop());
14		double två=Double.parseDouble((String)operand.pop());
15		operand.push(ett+två);
16
17		}
18
19		@Override
20		public void hantera(Stack operator, Stack operand) {
21		while(operator.empty()!=true&&((Operator) operator.top()).prioritet()>=this.prioritet()){
22		((Operator) operator.pop()).evaluera(operand);
23		}
24
25		operator.push(this);
26
27		}
28
29		}
30
31
32
33
34
35		MAIN
36
37
38		package projekt;
39
40		import java.util.Scanner;
41
42		public class Main {
43
44		static Stack operator;
45		static Stack operand;
46		static Scanner sc=new Scanner(System.in);
47		static String string;
48
49
50		public static void main (String[] args){
51		operator=new Stack();
52		operand=new Stack();
53		System.out.println("Skriv in ditt tal");
54		string=sc.nextLine();
55
56		String[] in=string.split(" ");
57		tilldela(in);
58		System.out.println(operand.top());
59
60
61
62		}
63
64		public static void tilldela(String[] lista){
65		for(String s: lista){
66		switch(s){
67
68		case "+":
69		new Plus().hantera(operator, operand);
70		break;
71
72		case "-":
73		new Minus().hantera(operator, operand);
74		break;
75
76		case "*":
77		new Multi().hantera(operator, operand);
78		break;
79
80		case "/":
81		new Division().hantera(operator, operand);
82		break;
83
84		case "(":
85		new VParantes().hantera(operator, operand);
86		break;
87
88		case ")":
89		break;
90		default:
91		operand.push(s);
92		break;
93		}
94
95		}
96
97
98		}
99		}
100
101
102		package projekt;
103
104		import java.util.LinkedList;
105
106		public class Stack<E> {
107
108		LinkedList<E> stack=new LinkedList<E>();
109
110		public void push(E item) {
111		stack.addLast(item);
112		}
113
114		public E pop() {
115		return stack.removeLast();
116		}
117
118		public E top() {
119		return stack.peek();
120		}
121
122		public Boolean empty() {
123		return stack.size() == 0;
124		}
125
126		public void clear(){
127		stack.clear();
128		}
129
130		}