Next Smaller Element
Monotonic stack scans right to locate nearest value smaller than current.
Live loop — open the studio to scrub, add your own array, or race it in Battle Arena.
Asked in interviews at
Reference implementation (Python)
def next_smaller(arr):
res = [-1] * len(arr)
for i in range(len(arr)):
for j in range(i + 1, len(arr)):
if arr[j] < arr[i]:
res[i] = arr[j]; break
return resEmbed this visualization
Drop a live, looping Next Smaller Element canvas into a blog post or course page.
<iframe src="/embed/next-smaller-element" width="100%" height="380" style="border:1px solid #e6e8ec;border-radius:14px" loading="lazy" title="3D algorithm visualization by CodeWithMunnaX"></iframe>Frequently asked
What is the time and space complexity of Next Smaller Element?
Next Smaller Element runs in O(n) time and O(n) auxiliary space.
Is the Next Smaller Element visualizer free?
The core 3D visualizer, Web Audio chimes and step intuition are free. A one-time ₹49 Pro Pass unlocks advanced algorithms, large custom arrays, Battle Arena and reel export.
Which companies ask Next Smaller Element in interviews?
Next Smaller Element shows up in interviews at Atlassian, Shopify, LinkedIn.
How does the 3D visualization of Next Smaller Element work?
Each array value becomes a 3D pillar whose height maps to its value. Comparisons glow amber, swaps flash red, and settled elements lock green while a floating pointer badge tracks the active index — synchronized line-by-line with the Python code.