Package g1901_2000.s1996_the_number_of_weak_characters_in_the_game

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    1996 - The Number of Weak Characters in the Game.

    Medium

    You are playing a game that contains multiple characters, and each of the characters has two main properties: attack and defense. You are given a 2D integer array properties where <code>propertiesi = attack<sub>i</sub>, defense<sub>i</sub></code> represents the properties of the <code>i<sup>th</sup></code> character in the game.

    A character is said to be weak if any other character has both attack and defense levels strictly greater than this character's attack and defense levels. More formally, a character i is said to be weak if there exists another character j where <code>attack<sub>j</sub>> attack<sub>i</sub></code> and <code>defense<sub>j</sub>> defense<sub>i</sub></code>.

    Return the number of weak characters.

    Example 1:

    Input: properties = \[\[5,5],6,3,3,6]

    Output: 0

    Explanation: No character has strictly greater attack and defense than the other.

    Example 2:

    Input: properties = \[\[2,2],3,3]

    Output: 1

    Explanation: The first character is weak because the second character has a strictly greater attack and defense.

    Example 3:

    Input: properties = \[\[1,5],10,4,4,3]

    Output: 1

    Explanation: The third character is weak because the second character has a strictly greater attack and defense.

    Constraints:

    • <code>2 <= properties.length <= 10<sup>5</sup></code>

    • properties[i].length == 2

    • <code>1 <= attack<sub>i</sub>, defense<sub>i</sub><= 10<sup>5</sup></code>

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer numberOfWeakCharacters(Array<IntArray> properties)

      • Methods inherited from class java.lang.Object

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