Page 360 - Computer science 868 Class 12
P. 360
Test your program with the sample data and some random data.
Example 1:
INPUT:
Hello! How are you?
OUTPUT:
The cipher text is:
Uryyb! Ubj ner lbh?
Example 2
INPUT:
Encryption helps to secure data.
OUTPUT:
The cipher text is:
Rapelcgvba urycf gb frpher qngn.
Example 3
INPUT:
You
OUTPUT:
INVALID LENGTH
import java.util.*;
class change
{
public static void main()
{
Scanner sc = new Scanner(System.in);
StringBuffer strbuf = new StringBuffer();
String str;
int len,i;
char ch;
System.out.println("Enter a sentence :");
str = sc.nextLine();
len = str.length();
if (len <= 3 || len >= 100)
{
System.out.println("INVALID LENGTH");
return;
}
for (i = 0; i < len; i++)
{
ch = str.charAt(i);
if ((ch >= 'A' && ch <= 'M') || (ch >= 'a' && ch <= 'm'))
{ strbuf.append((char)(ch + 13)); }
else if ((ch >= 'N' && ch <= 'Z') || (ch >= 'n' && ch <= 'z'))
358358 Touchpad Computer Science-XII

