Programming Example
Question 9
Study this program carefully to understand the logic, output, and explanation in a structured way.
Write a program to input a string and convert it into uppercase and print the pair of vowels and number of pair of vowels occurring in the string.
Example:
Input:
"BEAUTIFUL BEAUTIES "
Output :
Pair of vowels: EA, AU, EA, AU, IE
No. of pair of vowels: 5
import java.util.Scanner;
public class RAnsariVowelPair
{
static boolean isVowel(char ch) {
ch = Character.toUpperCase(ch);
if (ch == 'A' ||
ch == 'E' ||
ch == 'I' ||
ch == 'O' ||
ch == 'U')
return true;
return false;
}
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("Enter the sentence:");
String str = in.nextLine();
str = str.toUpperCase();
int count = 0;
System.out.print("Pair of vowels: ");
for (int i = 0; i < str.length() - 1; i++) {
if (isVowel(str.charAt(i))
&& isVowel(str.charAt(i + 1))) {
count++;
System.out.print(str.charAt(i));
System.out.print(str.charAt(i+1) + " ");
}
}
System.out.print("\nNo. of pair of vowels: " + count);
}
}First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.