Package g1601_1700.s1656_design_an_ordered_stream

Class OrderedStream

java.lang.Object

g1601_1700.s1656_design_an_ordered_stream.OrderedStream

public class OrderedStream
extends Object

1656 - Design an Ordered Stream\. Easy There is a stream of `n` `(idKey, value)` pairs arriving in an **arbitrary** order, where `idKey` is an integer between `1` and `n` and `value` is a string. No two pairs have the same `id`. Design a stream that returns the values in **increasing order of their IDs** by returning a **chunk** (list) of values after each insertion. The concatenation of all the **chunks** should result in a list of the sorted values. Implement the `OrderedStream` class: * `OrderedStream(int n)` Constructs the stream to take `n` values. * `String[] insert(int idKey, String value)` Inserts the pair `(idKey, value)` into the stream, then returns the **largest possible chunk** of currently inserted values that appear next in the order. **Example:** **** **Input** ["OrderedStream", "insert", "insert", "insert", "insert", "insert"] [[5], [3, "ccccc"], [1, "aaaaa"], [2, "bbbbb"], [5, "eeeee"], [4, "ddddd"]] **Output:** [null, [], ["aaaaa"], ["bbbbb", "ccccc"], [], ["ddddd", "eeeee"]] **Explanation:** // Note that the values ordered by ID is ["aaaaa", "bbbbb", "ccccc", "ddddd", "eeeee"]. OrderedStream os = new OrderedStream(5); os.insert(3, "ccccc"); // Inserts (3, "ccccc"), returns []. os.insert(1, "aaaaa"); // Inserts (1, "aaaaa"), returns ["aaaaa"]. os.insert(2, "bbbbb"); // Inserts (2, "bbbbb"), returns ["bbbbb", "ccccc"]. os.insert(5, "eeeee"); // Inserts (5, "eeeee"), returns []. os.insert(4, "ddddd"); // Inserts (4, "ddddd"), returns ["ddddd", "eeeee"]. // Concatentating all the chunks returned: // [] + ["aaaaa"] + ["bbbbb", "ccccc"] + [] + ["ddddd", "eeeee"] = ["aaaaa", "bbbbb", "ccccc", "ddddd", "eeeee"] // The resulting order is the same as the order above. **Constraints:** * `1 <= n <= 1000` * `1 <= id <= n` * `value.length == 5` * `value` consists only of lowercase letters. * Each call to `insert` will have a unique `id.` * Exactly `n` calls will be made to `insert`.

Constructor Summary

Constructors

Constructor	Description
OrderedStream(int n)

Method Summary

Modifier and Type	Method	Description
List<String>	insert(int idKey, String value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

OrderedStream

public OrderedStream(int n)

Method Details

insert

public List<String> insert(int idKey,
 String value)