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-rw-r--r--Sequence.java12
1 files changed, 12 insertions, 0 deletions
diff --git a/Sequence.java b/Sequence.java
new file mode 100644
index 0000000..a53c1bf
--- /dev/null
+++ b/Sequence.java
@@ -0,0 +1,12 @@
+public interface Sequence<T> extends Iterable<T> {
+
+ T get(int index); // Get value at index
+ void set(int index, T value); // Replace value at index
+ void add(int index, T value); // Add item at index (increase size)
+ T remove(int index); // Remove item at index
+ void add(T value); // Append item
+ T remove(); // Pop item
+ int size(); // get size
+ boolean isEmpty(); // size is zero
+}
+ \ No newline at end of file