Question

Design a class to overload a function check ( ) as follows : (i) void check (String str, char ch) – to find and print the frequency of a character in a string.

Example : *
Input:
str = “success”
ch = ‘s’ .
Output:  number of s present is = 3

(ii) void check(String si) – to display only vowels from string si, after converting it to lower case.

Example:
Input:
s1 = “computer”
Output:  o u e

Answer 1

class CharacterVowel {
public void checkering str, char ch) {
int c = 0, code,i,s;
str = str.toLowerCase( );
int len = str.length( );
for (code = 97; code < 122; code+ +) {
c = 0;
for (i = 0; i < len; i+ +) {
ch = str.charAt(i);
s = (int) ch;
if(s = = code)
c = c + 1;
}
ch = (char)code;
if(c ! = 0)
System.out.println(“Frequency of “+ch+ “is” +c);
}
}
public void check(String si) {
int i;
char ch=0, chr=0;
for(i=0;i<s1.length();i+ +) {
ch = s1.charAt(i);
if(Character.isUpperCase(ch))
chr = Character. toLo werCase(ch);
if((s1 .charAt(i)==’a’) 11 (s1 .charAt(i) = ‘u’) | j(s1 .charAt(i) = = ‘o’)| | (s1 .charAt(i)==’i’) 11 (s1 .charAt(i) = = ‘e’))
System.out.println(s1 .charAt(i));
}
}
}