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Author: Mohamed Sayed-ElMedany

src/main/java/javarevisited/top/fifty/java/programs/from/coding/interviews/ReverseaNumber.java

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+package javarevisited.top.fifty.java.programs.from.coding.interviews;
+
+import java.util.Scanner;
+
+/**
+ * @author medany
+ */
+
+/*
+ * Simple Java program to reverse a number in Java using loop and operator This
+ * program also shows example of using division operator(/) and Remainder
+ * Operator(%)
+ */
+
+public class ReverseaNumber {
+	public static void main(String args[]) {
+		Scanner in = new Scanner(System.in);
+		int num = in.nextInt();
+		in.close();
+		System.out.println("Reverse of number: " + num + " is " + reveerse(num));
+
+	}
+
+	public static Integer reverse(Integer num) {
+		int reverse = 0;
+		int remainder = 0;
+		do {
+			remainder = num % 10;
+			reverse = reverse * 10 + remainder;
+			num = num / 10;
+
+		} while (num > 0);
+
+		return reverse;
+	}
+
+	public static Integer reveerse(Integer num) {
+
+		StringBuilder sb = new StringBuilder(num.toString());
+		for (int i = 0; i < sb.length() / 2; i++) {
+			int end = (sb.length() - 1) - i;
+			char x = sb.charAt(i);
+			sb.setCharAt(i, sb.charAt(end));
+			sb.setCharAt(end, x);
+		}
+		return Integer.parseInt(sb.toString());
+	}
+}