Package g0701_0800.s0715_range_module

Class RangeModule

  • All Implemented Interfaces:
    
public final class RangeModule

    715 - Range Module.

    Hard

    A Range Module is a module that tracks ranges of numbers. Design a data structure to track the ranges represented as half-open intervals and query about them.

    A half-open interval [left, right) denotes all the real numbers x where left <= x < right.

    Implement the RangeModule class:

    • RangeModule() Initializes the object of the data structure.

    • void addRange(int left, int right) Adds the half-open interval [left, right), tracking every real number in that interval. Adding an interval that partially overlaps with currently tracked numbers should add any numbers in the interval [left, right) that are not already tracked.

    • boolean queryRange(int left, int right) Returns true if every real number in the interval [left, right) is currently being tracked, and false otherwise.

    • void removeRange(int left, int right) Stops tracking every real number currently being tracked in the half-open interval [left, right).

    Example 1:

    Input

    "RangeModule", "addRange", "removeRange", "queryRange", "queryRange", "queryRange"

    [ [], 10, 20, 14, 16, 10, 14, 13, 15, 16, 17]

    Output: null, null, null, true, false, true

    Explanation:

    RangeModule rangeModule = new RangeModule();
rangeModule.addRange(10, 20);
rangeModule.removeRange(14, 16);
rangeModule.queryRange(10, 14); // return True,(Every number in [10, 14) is being tracked)
rangeModule.queryRange(13, 15); // return False,(Numbers like 14, 14.03, 14.17 in [13, 15) are not being tracked)
rangeModule.queryRange(16, 17); // return True, (The number 16 in [16, 17) is still being tracked, despite the remove operation)

    Constraints:

    • <code>1 <= left < right <= 10<sup>9</sup></code>

    • At most <code>10<sup>4</sup></code> calls will be made to addRange, queryRange, and removeRange.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      RangeModule()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description