Developer Launches DSA Visualizer Tool Covering Trapping Rain Water and More

A frontend engineer known as nyaomaru has expanded DSA View View, a tool designed to help learners understand data structures and algorithms through step-by-step visual execution. The latest update adds three new problems: Trapping Rain Water, Top K Frequent Elements, and Selection Sort. Each problem introduces a distinct algorithmic strategy, such as the two-pointer technique used to efficiently calculate trapped rainwater without redundant computations. The tool aims to address the challenge of tracking multiple changing variables simultaneously by showing exactly how code runs at each step. It builds on earlier modules covering topics like Binary Search, Linked Lists, and Graph traversal, published in a series of articles on DEV Community.