Search a character in a string
- Program that will accept a string and character to search. The program will call a function, which will search for the occurrence position of the character in the string and return its position.
Program
import
java.io.IOException;
import java.util.Scanner;
public class
CharSearch {
private static Scanner sc;
public static void
main(String[] args) throws IOException {
char
key;
sc=new Scanner(System.in);
System.out.println("Enter
the String:");
String str=sc.nextLine();
System.out.println("Enter
the character to be searched:");
key=(char)
System.in.read();
CharSearch s=new
CharSearch();
s.search(str, key);
}
public void
search(String str,char key) {
int
flag=0;
for(int
i=0;i<str.length()-1;i++) {
if(str.indexOf(key,i)!=-1)
{
if(flag==0)
{
System.out.println("The
character \'"+key+"\' is present at positions:");
flag=1;
}
i=str.indexOf(key,i);
System.out.println(i+1);
}
}
if(flag==0)
{
System.out.println("The
character \'"+key+"\' is not there in the string.\n"+(-1));
}
}
}
Output
Enter
the String:
This
is java programming.
Enter
the character to be searched:
g
The
character 'g' is present at positions:
17
24
- Function, which prints a given number in words.
Program
import
java.util.Scanner;
public class
NumberToWords {
private static
String[] ones={"zero","One","Two","Three","Four","Five","Six","Seven", "Eight","Nine","Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen", "Seventeen","Eighteen","Nineteen"};
private static
String[] tens={"","","Twenty","Thirty","Forty","Fifty","Sixty","Seventy", "Eighty","Ninety"};
private static
Scanner sc;
public static void
main(String[] args) {
int
num;
System.out.println("Enter
the number:");
sc=new
Scanner(System.in);
num=sc.nextInt();
if(num>0)
{
System.out.println("The
number in words:");
}
NumberToWords.wordConvert(num);
}
public static void
wordConvert(int num) {
if(num<0)
{
System.out.println("Enter
a positive number");
return;
}
if(num<20)
{
System.out.print(ones[num]);
}
else if(num<100)
{
System.out.print(tens[num/10]+"
");
if(num%10>0)
{
NumberToWords.wordConvert(num%10);
}
}
else if(num<1000)
{
System.out.print(ones[num/100]+"
Hundred");
if(num%100>0)
{
System.out.print("
and ");
NumberToWords.wordConvert(num%100);
}
}
else if(num<100000)
{
NumberToWords.wordConvert(num/1000);
System.out.print("
Thousand ");
if(num%1000>0)
{
NumberToWords.wordConvert(num%1000);
}
}
else if(num<10000000)
{
NumberToWords.wordConvert(num/100000);
System.out.print("
Lakh ");
if(num%10000>0)
{
NumberToWords.wordConvert(num%10000);
}
}
else {
System.out.println("Enter
a number below 1 Crore!!");
}
}
}
Output
Enter
the number:
9999
The
number in words:
Nine
Thousand Nine Hundred and Ninety Nine
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