initial solutions

src/main/java/oving1/LineEditor.java

@@ -0,0 +1,64 @@
+package oving1;
+
+public class LineEditor {
+	String text = "";
+	int insertionIndex = 0;
+
+	LineEditor() {
+	}
+
+	void left() {
+		insertionIndex -= 1;
+	}
+
+	void right() {
+		insertionIndex += 1;
+	}
+
+	void insertString(String s) {
+		String a = text.substring(0, insertionIndex - 1);
+		String b = text.substring(insertionIndex, text.length());
+		text = a + s + b;
+	}
+
+	void deleteLeft() {
+		if (insertionIndex < 1) {
+			return;
+		}
+		String a = text.substring(0, insertionIndex - 2);
+		String b = text.substring(insertionIndex, text.length());
+		text = a + b;
+	}
+
+	void deleteRight() {
+		if (insertionIndex >= text.length() - 1) {
+			return;
+		}
+		String a = text.substring(0, insertionIndex - 1);
+		String b = text.substring(insertionIndex + 1, text.length());
+		text = a + b;
+	}
+
+	String getText() {
+		return text;
+	}
+
+	void setText(String s) {
+		text = s;
+	}
+
+	int getInsertionIndex() {
+		return insertionIndex;
+	}
+
+	void setInsertionIndex(int i) {
+		insertionIndex = i;
+	}
+
+	@Override
+	public String toString() {
+		String a = text.substring(0, insertionIndex - 1);
+		String b = text.substring(insertionIndex, text.length());
+		return a + "|" + b;
+	}
+}