Naming

Rule: Verb + Object.

Weak

public int solve(int[] nums)

Strong

public int findMaximumSubarraySum(int[] numbers)

Clear intent. No guessing required.

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Boolean Naming

Always begin with:

• is
• has
• can
• should

boolean valid;

boolean isValidInput;
boolean hasCycle;

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Variable Naming

Describe meaning, not type.

int m;
Map<Integer, Integer> hm;

int maximumSum;
Map<Integer, Integer> valueToIndex;

Readable > short.