Daily DSA Challenge

Sharpen Your Skills, One Problem at a Time

A new data structures and algorithms question every day. Solve it, learn the approaches, and track your progress. You can also embed the daily challenge on your own website.

New Challenge

Every Day

Embeddable

On Any Website

Today's Date

Saturday, March 7, 2026

Today's Challenge

Challenge for Saturday, March 7, 2026

Distinct SubsequencesHARD

Solve Challenge

Embed on Your Website

Add the daily DSA challenge to your blog, portfolio, or team dashboard. Copy the snippet below and paste it into your HTML.

HTML

<div style="max-width:100%;">
  <a
    href="https://scaleengineer.com/daily"
    target="_blank"
    rel="noopener noreferrer"
    style="display:inline-block;margin-bottom:6px;font:500 12px/1.4 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#737373;text-decoration:none;"
  >Daily DSA Challenge by <span style="color:#0a0a0a;text-decoration:underline;text-underline-offset:3px;">Scale Engineer</span></a>
  <iframe
    id="se-daily-dsa"
    src="https://scaleengineer.com/embed/daily/dsa"
    width="100%"
    height="260"
    style="border:1px dashed #000;border-radius:0;overflow:hidden;"
    title="Scale Engineer — Daily DSA Challenge"
    loading="lazy"
  ></iframe>
</div>
<script>
window.addEventListener("message",function(e){
  if(e.data&&e.data.type==="se-embed-resize"){
    var f=document.getElementById("se-daily-dsa");
    if(f)f.style.height=e.data.height+"px";
  }
});
</script>