Daily challenge

One problem. Every day

A curated DSA question with approaches, solutions, and interview context. Embed the widget on your site or solve it here.

Admit

AUG 09

#0784

Easy

Daily · Sunday, August 9

Positions of Large Groups

Tear hereSolve

Published·371

Cadence·Daily

Embed·Available

Today·Aug 9

Archive

Recent challenges

Missed a day? Catch up on the last 10 problems from the daily rotation.

All DSA problems

Embed

Put it on your site

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

HTML embed snippet
<div style="max-width:100%;">
  <a
    href="https://scaleengineer.com/daily"
    target="_blank"
    rel="noopener noreferrer"
    style="display:inline-block;margin-bottom:8px;font:500 11px/1.4 'JetBrains Mono',ui-monospace,Menlo,monospace;letter-spacing:0.14em;text-transform:uppercase;color:#94989f;text-decoration:none;"
  >Daily DSA · <span style="color:#2c55e0;text-transform:none;letter-spacing:0;">Scale Engineer</span></a>
  <iframe
    id="se-daily-dsa"
    src="https://scaleengineer.com/embed/daily/dsa?theme=light"
    width="100%"
    height="220"
    style="border:1px solid rgba(23,25,28,0.10);border-radius:6px;overflow:hidden;background:#fbfbfa;"
    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>

Keep going

Stay in the loop

Library

Browse all DSA problems

Explore the full library — patterns, data structures, approaches, and video walkthroughs.

Go to DSA questions

Newsletter

One sharp idea, every week

Daily challenge drops, system design, and interview prep — short enough to finish, useful enough to keep.

No spam. Unsubscribe anytime.