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Grokking the Coding Interview Patterns

Maximum Points After Enemy Battles

Explore how to maximize points by strategically using greedy methods to manage your current energy against enemy energies. Learn to apply two key operations optimally to increase points and energy, strengthening your problem-solving skills with greedy algorithms relevant to coding interviews.

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Statement

You are given an integer array enemyEnergies where each element represents the energy value of an enemy, and an integer currentEnergy representing your initial energy.

You start with 00 points, and all enemies are initially unmarked. You may perform either of the following operations any number of times to accumulate points:

Operation 1 — Choose an unmarked enemy i such that currentEnergy >= enemyEnergies[i]:

  • Your points increase by 11.

  • Your energy decreases: currentEnergy = currentEnergy - ...