-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathArrayList.java
More file actions
83 lines (71 loc) · 1.85 KB
/
ArrayList.java
File metadata and controls
83 lines (71 loc) · 1.85 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package arraylist;
/**
*
* @author sameer
*/
class MyArrayList{
private static final int SIZE_FACTOR = 5;
private Object data[];
private int index;
private int size;
private boolean name;
public MyArrayList() {
this.data = new Object[SIZE_FACTOR];
this.size = SIZE_FACTOR;
}
public void add(Object obj){
if(this.index == this.size-1){
increaseSizeAndReallocate();
}
data[this.index] = obj;
this.index++;
}
public void increaseSizeAndReallocate(){
this.size = this.size+SIZE_FACTOR;
Object newData[] = new Object[this.size];
for(int i=0; i<data.length; i++){
newData[i] = data[i];
}
this.data = newData;
}
public Object get(int i)throws Exception{
if(i>this.index-1){
throw new Exception("ArrayIndexOutOfBound");
}
if(i<0){
throw new Exception("Negative Value");
}
return this.data[i];
}
public void remove(int i) throws Exception{
if(i>this.index-1){
throw new Exception("ArrayIndexOutOfBound");
}
if(i<0){
throw new Exception("Negative Value");
}
for(int x=i; x<this.data.length-1;x++){
data[x]=data[x+1];
}
this.index--;
}
}
public class ArrayList {
/**
* @param args the command line arguments
*/
public static void main(String[] args)throws Exception {
// TODO code application logic here
MyArrayList mal = new MyArrayList();
for(int i=0; i<10;i++){
mal.add(i);
}
mal.remove(5);
System.out.println(mal.get(7));
}
}