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LeetCode solutions

2123. The Number of Weak Characters in the Game

My accepted Python solution to LeetCode problem 2123, The Number of Weak Characters in the Game, running in 251ms.

  • Difficulty: Medium
  • Python
  • Runtime 251ms
  • Memory 58.5MB

Read the problem on LeetCode View on GitHub

The problem statement is LeetCode’s and stays on their site. What follows is my accepted solution.

Python

Accepted on LeetCode — runtime 251ms, memory 58.5MB, accepted 2025-12-29.

python
class Solution:
    def numberOfWeakCharacters(self, properties: List[List[int]]) -> int:
        # Sort by attack descending, then by defense ascending
        properties.sort(key=lambda x: (-x[0], x[1]))
        
        count = 0
        max_defense = 0
        
        for attack, defense in properties:
            if defense < max_defense:
                count += 1
            else:
                max_defense = defense
        
        return count

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