-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathReverseArray.java
More file actions
43 lines (34 loc) · 857 Bytes
/
ReverseArray.java
File metadata and controls
43 lines (34 loc) · 857 Bytes
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
package array_practice;
public class ReverseArray {
public static void printArray(int[] arr) {
int n = arr.length;
for(int i = 0; i<n ; i++) {
System.out.print(arr[i] + " ");
}
System.out.println();
}
public static int[] reverseArray(int[] arr) {
int[] reverseArray = new int[arr.length];
for(int i = 0; i <arr.length; i++) {
reverseArray[i] = arr[arr.length - i - 1];
}
return reverseArray;
}
public static int[] reverseArray2(int[] arr, int start, int end) {
while(start < end) {
int temp = arr[start];
arr[start] = arr[end];
arr[end] = temp;
start++;
end--;
}
return arr;
}
public static void main(String[] args) {
int[] arr = {1,2,3,4,5,6,7,8,9};
printArray(arr);
System.out.println();
printArray(reverseArray(arr));
printArray(reverseArray2(arr, 0, arr.length-1));
}
}