Alpha Numeric Unique Random Number

[vrkamalakar]

Hi,

Can I get a piece of code which can generate a 10 - 15 digit/character of uinque Random Number. The generated random number can contain both characters and digits.

Regards,
Kamalakar.

[r035198x]

Hi,

Can I get a piece of code which can generate a 10 - 15 digit/character of uinque Random Number. The generated random number can contain both characters and digits.

Regards,
Kamalakar.

A simple way of doing it is to use a char array containing all the characters that you want to use (including the numbers) and then pick a character at random until you reach anywhere between 10-15 characters. Do you still need more help on it?

[vrkamalakar]

Can you give me a small example.......i e., piece of code

Thanks & Regards,
Kamal

A simple way of doing it is to use a char array containing all the characters that you want to use (including the numbers) and then pick a character at random until you reach anywhere between 10-15 characters. Do you still need more help on it?

[r035198x]

Can you give me a small example.......i e., piece of code

Thanks & Regards,
Kamal

You are a very lucky guy. Rarely in this forum do you get code when you have posted none yourself

public class Test {
	public static void main(String... args) {
		char[] chars = new char[36];
		int i = 0;
		//This is for lower case characters only
		for(char c = 'a'; c <= 'z';c++) {
			chars[i++] = c;
		}
		i = 26;
		for(char c = '0'; c <= '9';c++) {
			chars[i++] = c;
		}
		int numberOfCodes = 0;
		while (numberOfCodes < 10) {
			int numChars = 10 + (int)(Math.random()*5.5);
			String code = "";
			for(i = 0; i < numChars; i++) {
				char c = chars[(int)(Math.random() * chars.length)];
				code = code + c;
			}
			System.out.println("Code is :"+code);
 			System.out.println("Length of code is :"+code.length());
 			System.out.println("***********************************");
			numberOfCodes++;
		}
	}
}

[vrkamalakar]

Thanks a lot :)

Regards,
Kamal

You are a very lucky guy. Rarely in this forum do you get code when you have posted none yourself

public class Test {
	public static void main(String... args) {
		char[] chars = new char[36];
		int i = 0;
		//This is for lower case characters only
		for(char c = 'a'; c <= 'z';c++) {
			chars[i++] = c;
		}
		i = 26;
		for(char c = '0'; c <= '9';c++) {
			chars[i++] = c;
		}
		int numberOfCodes = 0;
		while (numberOfCodes < 10) {
			int numChars = 10 + (int)(Math.random()*5.5);
			String code = "";
			for(i = 0; i < numChars; i++) {
				char c = chars[(int)(Math.random() * chars.length)];
				code = code + c;
			}
			System.out.println("Code is :"+code);
 			System.out.println("Length of code is :"+code.length());
 			System.out.println("***********************************");
			numberOfCodes++;
		}
	}
}

[r035198x]

Thanks a lot :)

Regards,
Kamal

Just remember to include your own code when asking next time.