Create 21. Clean up string

Week 2: Methods, strings and lists/21. Clean up string

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+Write the method
+
+String clean(String wprd)
+
+which returns a string with "all characters except upper and lower case letters and spaces" stripped from the string given as a parameter.
+
+
+Example method call:
+public static void main(String[] args){
+    String test = "Hel1234!&%lo";
+    String cleaned = clean(test);
+    System.out.println(cleaned);
+}
+
+Program outputs:
+Hello
+
+
+
+
+
+import java.util.Random;
+
+public class Test{
+    public static void main(String[] args){
+        final Random r = new Random();
+        
+        
+        String[] words = {
+            "a.b.c.",
+            "m1213i342x&#/¤(9985e4456d463?",
+            "a1b2c3d4e5f6g7h8i9j10",
+            "!he\"#re¤% &/in() t,.,-he.- m&(#)iddle*^** of&% tr&&ash& is¤ %%a% mes%#%sage"
+            
+        };
+        for (String w : words) {
+            System.out.println("Test with parameter " + w);
+            System.out.println("Cleaned: " + clean(w));
+            System.out.println("");
+        }
+        
+    }
+  }
+
+    //ADD
+    // public static String clean(String wprd) {
+    //   String finalWord = "";
+    //   for (char character: wprd) {
+    //     // uppercase
+    //     if (character >= 'A' && character <= 'Z') {
+    //       finalWord+=character;
+    //     }
+    //     //lowercase
+    //     else if (character >= 'a' && character <= 'z') {
+    //       finalWord+=character;
+    //     }
+    //     //spaces
+    //     else if (character == ' ') {
+    //       finalWord+=character;
+    //     }
+    //   }
+    //   return finalWord;
+    // }
+
+
+    //ADD
+    public static String clean(String wprd) {
+      String finalWord = "";
+      for (int i = 0; i < wprd.length(); i++) {
+        char character = wprd.charAt(i);
+        // uppercase
+        if (character >= 'A' && character <= 'Z') {
+            finalWord += character;
+        }
+        // lowercase
+        else if (character >= 'a' && character <= 'z') {
+            finalWord += character;
+        }
+        // space
+        else if (character == ' ') {
+            finalWord += character;
+        }
+      }
+      return finalWord;
+    }
+
+
+
+
+
+
+
+}
+
+
+
+
+
+
+Test with parameter a.b.c.
+Cleaned: abc
+
+Test with parameter m1213i342x&#/¤(9985e4456d463?
+Cleaned: mixed
+
+Test with parameter a1b2c3d4e5f6g7h8i9j10
+Cleaned: abcdefghij
+
+Test with parameter !he"#re¤% &/in() t,.,-he.- m&(#)iddle*^** of&% tr&&ash& is¤ %%a% mes%#%sage
+Cleaned: here in the middle of trash is a message
+
+
+