initial commit

Author: Ram swaroop

src/me/ramswaroop/misc/ReverseAndAdd.java

@@ -0,0 +1,68 @@
+package me.ramswaroop.misc;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+
+/**
+ * Created by IntelliJ IDEA.
+ *
+ * @author: ramswaroop
+ * @date: 9/16/15
+ * @time: 10:53 PM
+ */
+public class ReverseAndAdd {
+
+    public static long getReverse(long n) {
+        return Long.valueOf(new StringBuilder().append(n).reverse().toString());
+    }
+
+    public static boolean isPalindrome(long n) {
+        return n == getReverse(n);
+    }
+
+    public static boolean isNegative(long n) {
+        return n < 0;
+    }
+
+    public static long[] reverseAddAndCheck(String n) {
+        long additions = 0;
+        long original = Long.valueOf(n);
+
+        boolean isNegative = isNegative(original);
+        if (isNegative) original = -original;
+
+        long reverse;
+
+        while (!isPalindrome(original + (reverse = getReverse(original)))) {
+            original += reverse;
+            additions++;
+        }
+
+        original += reverse;
+        if (isNegative) original = -original;
+
+        return new long[]{additions, original};
+    }
+
+    public static void readFile(String filePath) {
+
+        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
+
+            String line;
+
+            while ((line = br.readLine()) != null) {
+                long[] result = reverseAddAndCheck(line);
+                System.out.println(result[0] + " " + result[1]);
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String a[]) {
+        readFile(a[0]);
+        System.exit(0);
+    }
+}

src/me/ramswaroop/misc/reverseandadd.txt

@@ -0,0 +1,106 @@
+1
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+89
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+193
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+1304199693
+5020089949
+1005499526