Palindrome

ardallie · ardallie · commit cfc601c5d27f · 2021-08-14T13:31:21.000+01:00
diff --git a/src/easy/Palindrome.java b/src/easy/Palindrome.java
@@ -0,0 +1,39 @@
+package easy;
+
+/**
+ * Have the function Palindrome(str) take the str parameter
+ * being passed and return the string true
+ * if the parameter is a palindrome,
+ * (the string is the same forward as it is backward)
+ * otherwise return the string false.
+ * For example: "racecar" is also "racecar" backwards.
+ * Punctuation and numbers will not be part of the string.
+ */
+public class Palindrome {
+
+  /**
+   * Palindrome function.
+   *
+   * @param str input string
+   * @return "true" is the string is a palindrome
+   */
+  private static String palindrome(String str) {
+    StringBuilder reversed = new StringBuilder();
+    String cleaned = str.replaceAll(" ", "");
+    reversed.append(cleaned).reverse();
+    return cleaned.equals(reversed.toString()) && str.length() > 0 ? "true" : "false";
+  }
+
+  /**
+   * Entry point.
+   *
+   * @param args command line arguments
+   */
+  public static void main(String[] args) {
+    var result1 = palindrome("dont nod");
+    System.out.println(result1);
+    var result2 = palindrome("rats live on no evil star");
+    System.out.println(result2);
+  }
+
+}
