What is the time and space complexity of Implement Debounce?

Time complexity: O(1). Space complexity: O(1).

Implement Debounce

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Solution Guide: Implement Debounce

Approach

Return a wrapper function that resets a timer on every call using clearTimeout and setTimeout. The original function only executes after the caller stops invoking for the specified wait period. Use apply to preserve the correct this context and arguments.

Complexity Analysis

Time: O(1)
Space: O(1)

Pattern

Debounce Pattern

Why It Works

Each invocation clears the previous timer and starts a new one, so only the last call in a burst of rapid calls actually triggers the function after the wait period elapses.

Updated Mar 2026