As a Senior React developer I wanted to

show exactly WHY binary search exists —

not just explain it with words.

So I built a side by side comparison

showing both algorithms running on the

same array searching for the same target.

The Visual Difference

Linear search checks every element from

left to right. Predictable but slow.

Binary search goes straight to the middle.

Higher or lower? Eliminate half. Repeat.

Tech Stack

React functional components

useState for animation state

useRef for timeout management

Zero external animation libraries

The Key Code

Two separate animation pipelines running

sequentially — linear first, then binary:

\ `javascript

// Linear search steps

for (let i = 0; i < array.length; i++) {

steps.push({ checking: i });

if (array[i] === target) break;

}

// Binary search steps

while (low <= high) {

const mid = Math.floor((low + high) / 2);

steps.push({ middle: mid, eliminated });

if (array[mid] === target) break;

else if (array[mid] < target) low = mid +…