Fix style (whitespace for methods, comments)

Author: phrdang

src/com/codefortomorrow/beginner/chapter3/practice/StringSlicer.java

@@ -0,0 +1,14 @@
+package com.codefortomorrow.beginner.chapter3.practice;
+
+/*
+ * Use String Methods to convert the following strings to the results
+ * a) "A Tale of Two Cities" -> "WO CIT"
+ * b) "A Handmaid's Tale" -> "s"
+ * c) "wE LoVe tO CoDe" -> "e love to code"
+ */
+
+public class StringSlicer {
+  public static void main(String[] args) {
+    // Write Code here
+  }
+}

src/com/codefortomorrow/beginner/chapter3/solutions/StringSlicer.java

@@ -0,0 +1,26 @@
+package com.codefortomorrow.beginner.chapter3.solutions;
+
+/*
+ * Use String Methods to convert the following strings to the results
+ * a) "A Tale of Two Cities" -> "WO CIT"
+ * b) "A Handmaid's Tale" -> "s"
+ * c) "wE LoVe tO CoDe" -> "e love to code"
+ */
+public class StringSlicer {
+  public static void main(String[] args) {
+    // Initialize original strings
+    String s1 = "A Tale of Two Cities";
+    String s2 = "A Handmaid's Tale";
+    String s3 = "wE LoVe tO CoDe";
+
+    // Use substring + uppercase on the first one
+    System.out.println(s1.toUpperCase().substring(11, 17));
+
+    // Use charAt for s2
+    System.out.println(s2.charAt(11));
+
+    // Use the single-argument substring + lowercase
+    System.out.println(s3.toLowerCase().substring(1));
+    // You can also use substring(1,15)
+  }
+}