java/MaskMiddle.java at master · Alekha-32/java · GitHub

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package LogicalPrograms;

public class MaskMiddle {

	public static String muskcard(String str) {

		if(str.length() < 4) {
			return str;
		}
		else {
			// Hide front value
			String res = "";
			for(int i=0;i<str.length();i++) {
				if( i < str.length()-4) {
					res += "#";
				}
			}
			res += str.substring(str.length()-4);


			// print middle values hide
		//	res = str.substring(0,str.length()-10);
		//res += "####";
			//res += str.substring(10,str.length());


		//	res = str.substring(0,str.length()-4); //print last values hide
		//	res +="####";


			return res;
		}


	}


	public static void main(String[] args) {

	//	MaskMiddle m = new MaskMiddle("4556364607935616");
		System.out.println(MaskMiddle.muskcard("1478128816325010"));
		System.out.println(MaskMiddle.muskcard("4556364607935616"));
		System.out.println(MaskMiddle.muskcard("64607935616"));
		System.out.println(MaskMiddle.muskcard("1"));
		System.out.println(MaskMiddle.muskcard(""));


	}

}