Find Second Largest Number
Maintains first and second maximum in a single pass without sorting.
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 second_largest(arr):
first = second = float('-inf')
for num in arr:
if num > first:
second = first
first = num
elif num > second and num != first:
second = num
return secondEmbed this visualization
Drop a live, looping Find Second Largest Number canvas into a blog post or course page.
<iframe src="/embed/second-largest" 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 Find Second Largest Number?
Find Second Largest Number runs in O(n) time and O(1) auxiliary space.
Is the Find Second Largest Number 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 Find Second Largest Number in interviews?
Find Second Largest Number shows up in interviews at Twitter, Meta, Snapchat.
How does the 3D visualization of Find Second Largest Number 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.