Frequency of Each Element
Counts occurrences of each unique element using a frequency hash map.
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 element_frequency(arr):
freq = {}
for num in arr:
freq[num] = freq.get(num, 0) + 1
return freqEmbed this visualization
Drop a live, looping Frequency of Each Element canvas into a blog post or course page.
<iframe src="/embed/frequency-elements" 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 Frequency of Each Element?
Frequency of Each Element runs in O(n) time and O(n) auxiliary space.
Is the Frequency of Each 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 Frequency of Each Element in interviews?
Frequency of Each Element shows up in interviews at Meta, Amazon, Uber.
How does the 3D visualization of Frequency of Each 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.