TP1 final

src/main/java/AsciiStringFilter.java

+public class AsciiStringFilter implements StringFilter {
+
+    @Override
+    public String filter(String string) {
+        StringBuilder sb = new StringBuilder();
+        for (char c : string.toCharArray()) {
+            if ((int) c < 128) {
+                sb.append(c);
+            }
+        }
+        return sb.toString();
+    }
+}

src/main/java/CompositeStringFilter.java

+public class CompositeStringFilter implements StringFilter {
+
+    private StringFilter[] filters;
+
+    public CompositeStringFilter(StringFilter... filters) {
+        this.filters = filters;
+    }
+
+    @Override
+    public String filter(String string) {
+        String result = string;
+        for (StringFilter filter : filters) {
+            result = filter.filter(result);
+        }
+        return result;
+    }
+}

src/main/java/LowerCaseStringFilter.java

+public class LowerCaseStringFilter implements StringFilter {
+
+    @Override
+    public String filter(String string) {
+        return string.toLowerCase();
+    }
+}

src/main/java/PostfixStringFilter.java

+public class PostfixStringFilter implements StringFilter {
+
+    private int n;
+
+    public PostfixStringFilter(int n) {
+        this.n = n;
+    }
+
+    @Override
+    public String filter(String string) {
+        return string.length() > n ? string.substring(string.length() - n) : string;
+    }
+}

src/main/java/PrefixStringFilter.java

+public class PrefixStringFilter implements StringFilter {
+
+    private int n;
+
+    public PrefixStringFilter(int n) {
+        this.n = n;
+    }
+
+    @Override
+    public String filter(String string) {
+        return string.length() > n ? string.substring(0, n) : string;
+    }
+}

src/main/java/StringFilter.java

+public interface StringFilter {
+    String filter(String string);
+}

src/main/java/StringFilterUtils.java

+public class StringFilterUtils {
+
+    public static String[] filter(String[] strings, StringFilter filter) {
+        String[] result = new String[strings.length];
+        for (int i = 0; i < strings.length; i++) {
+            result[i] = filter.filter(strings[i]);
+        }
+        return result;
+    }
+}

src/main/java/UpperCaseStringFilter.java

+public class UpperCaseStringFilter implements StringFilter {
+
+    @Override
+    public String filter(String string) {
+        return string.toUpperCase();
+    }
+}