InverteUrl

InverteUrl.java

public class InverteUrl {

	public static void main(String args[]) {
		if (args.length == 0) {
			throw new IllegalArgumentException("Cadê a url?");
		}
		
		String url = args[0];
		int len = url.length();
				
		char[] tempCharArray = new char[len];
		char[] charArray = new char[len];

		// put original string in an 
		// array of chars
		for (int i = 0; i < len; i++) {
			tempCharArray[i] = url.charAt(i);
		}

		// reverse array of chars
		for (int j = 0; j < len; j++) {
			charArray[j] = tempCharArray[len - 1 - j];
		}
		
		System.out.println(charArray);
	}
}