Developer

This experience deserves a bigger screen

The DSA Visualizer is designed for deep focus,
side-by-side code, and real-time execution insight.

On small screens, that level of clarity can't be preserved.

Open on a tablet (landscape) or desktop for the intended experience.

Desktop experience preview

Upper BoundStep-by-Step Visualization

Find first element > target.

Problem Statement

Find smallest index where arr[i] > target.

Approach

Binary search. Move left if arr[mid] > target.

Time & Space Complexity

Time O(log n), Space O(1).

Interactive Visualization

Loading Interactive Visualizer...

Click "Play" or use arrow keys to step through the execution.