Solved 2016 Practical Paper ISC Computer Science — Question 3
Back to all questionsQuestion 3
Write a program to accept a sentence which may be terminated by either '.', '?' or '!' only. The words may be separated by more than one blank space and are in UPPER CASE.
Perform the following tasks:
- Find the number of words beginning and ending with a vowel.
- Place the words which begin and end with a vowel at the beginning, followed by the remaining words as they occur in the sentence.
Test your program with the sample data and some random data:
Example 1
INPUT:
ANAMIKA AND SUSAN ARE NEVER GOING TO QUARREL ANYMORE.
OUTPUT:
NUMBER OF WORDS BEGINNING AND ENDING WITH A VOWEL = 3
ANAMIKA ARE ANYMORE AND SUSAN NEVER GOING TO QUARREL
Example 2
INPUT:
YOU MUST AIM TO BE A BETTER PERSON TOMORROW THAN YOU ARE TODAY.
OUTPUT:
NUMBER OF WORDS BEGINNING AND ENDING WITH A VOWEL = 2
A ARE YOU MUST AIM TO BE BETTER PERSON TOMORROW THAN YOU TODAY
Example 3
INPUT:
LOOK BEFORE YOU LEAP.
OUTPUT:
NUMBER OF WORDS BEGINNING AND ENDING WITH A VOWEL = 0
LOOK BEFORE YOU LEAP
Example 4
INPUT:
HOW ARE YOU@
OUTPUT:
INVALID INPUT
Solution
import java.util.*;
public class VowelWord
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("ENTER THE SENTENCE:");
String ipStr = in.nextLine().trim().toUpperCase();
int len = ipStr.length();
char lastChar = ipStr.charAt(len - 1);
if (lastChar != '.'
&& lastChar != '?'
&& lastChar != '!') {
System.out.println("INVALID INPUT");
return;
}
String str = ipStr.substring(0, len - 1);
StringTokenizer st = new StringTokenizer(str);
StringBuffer sbVowel = new StringBuffer();
StringBuffer sb = new StringBuffer();
int c = 0;
while (st.hasMoreTokens()) {
String word = st.nextToken();
int wordLen = word.length();
if (isVowel(word.charAt(0))
&& isVowel(word.charAt(wordLen - 1))) {
c++;
sbVowel.append(word);
sbVowel.append(" ");
}
else {
sb.append(word);
sb.append(" ");
}
}
String newStr = sbVowel.toString() + sb.toString();
System.out.println("NUMBER OF WORDS BEGINNING AND ENDING WITH A VOWEL = " + c);
System.out.println(newStr);
}
public static boolean isVowel(char ch) {
ch = Character.toUpperCase(ch);
boolean ret = false;
if (ch == 'A'
|| ch == 'E'
|| ch == 'I'
|| ch == 'O'
|| ch == 'U')
ret = true;
return ret;
}
}Output
import
java.util.*
;
public
class
VowelWord
{
public
static
void
main
(
String
args
[]) {
Scanner
in
=
new
Scanner
(
System
.
in);
System
.
out
.
println(
"
ENTER THE SENTENCE:
"
);
String
ipStr
=
in
.
nextLine()
.
trim()
.
toUpperCase();
int
len
=
ipStr
.
length();
char
lastChar
=
ipStr
.
charAt(len
-
1
);
if
(lastChar
!=
'
.
'
&&
lastChar
!=
'
?
'
&&
lastChar
!=
'
!
'
) {
System
.
out
.
println(
"
INVALID INPUT
"
);
return
;
}
String
str
=
ipStr
.
substring(
0
, len
-
1
);
StringTokenizer
st
=
new
StringTokenizer
(str);
StringBuffer
sbVowel
=
new
StringBuffer
();
StringBuffer
sb
=
new
StringBuffer
();
int
c
=
0
;
while
(st
.
hasMoreTokens()) {
String
word
=
st
.
nextToken();
int
wordLen
=
word
.
length();
if
(isVowel(word
.
charAt(
0
))
&&
isVowel(word
.
charAt(wordLen
-
1
))) {
c
++
;
sbVowel
.
append(word);
sbVowel
.
append(
"
"
);
}
else
{
sb
.
append(word);
sb
.
append(
"
"
);
}
}
String
newStr
=
sbVowel
.
toString()
+
sb
.
toString();
System
.
out
.
println(
"
NUMBER OF WORDS BEGINNING AND ENDING WITH A VOWEL =
"
+
c);
System
.
out
.
println(newStr);
}
public
static
boolean
isVowel
(
char
ch
) {
ch
=
Character
.
toUpperCase(ch);
boolean
ret
=
false
;
if
(ch
==
'
A
'
||
ch
==
'
E
'
||
ch
==
'
I
'
||
ch
==
'
O
'
||
ch
==
'
U
'
)
ret
=
true
;
return
ret;
}
}
Output