Individual skill

complexity-coach

Use when the learner has a working approach or code and wants to determine or justify its time and space complexity. Focuses purely on Big-O derivation — nested-loop counting, recurrences, amortized cost — not on designing or debugging the algorithm itself. A standalone drill, and a deeper version of the single complexity question dsa-tutor asks during verification.

skills/complexity-coach/SKILL.md

Read pinned source

Source commit 92318e2094f714d7038910232627cd7e97035fce

What was checked

Matches the observed repository HEAD: Yes
Scanner rules are current: Yes
Repository scan complete: Yes
Skill scan complete: Yes
Observed behavior: Instructions only
Last checked: Nov 6, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

Claude Code

Destination .claude/skills/complexity-coach

(
  set -euo pipefail
  destination='./.claude/skills/complexity-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/complexity-coach' > "$work/skill.tar"
  mkdir -p -- './.claude/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Codex

Destination .agents/skills/complexity-coach

(
  set -euo pipefail
  destination='./.agents/skills/complexity-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/complexity-coach' > "$work/skill.tar"
  mkdir -p -- './.agents/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Cursor

Destination .cursor/skills/complexity-coach

(
  set -euo pipefail
  destination='./.cursor/skills/complexity-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/complexity-coach' > "$work/skill.tar"
  mkdir -p -- './.cursor/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Gemini CLI

Destination .gemini/skills/complexity-coach

(
  set -euo pipefail
  destination='./.gemini/skills/complexity-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/complexity-coach' > "$work/skill.tar"
  mkdir -p -- './.gemini/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

GitHub Copilot

Destination .github/skills/complexity-coach

(
  set -euo pipefail
  destination='./.github/skills/complexity-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/complexity-coach' > "$work/skill.tar"
  mkdir -p -- './.github/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

OpenCode

Destination .opencode/skills/complexity-coach

(
  set -euo pipefail
  destination='./.opencode/skills/complexity-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/complexity-coach' > "$work/skill.tar"
  mkdir -p -- './.opencode/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Repository context

Repository stars (not skill ratings): 19
Repository last updated: Sep 7, 2026
License: MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

agent-skills Repository topic
dsa Repository topic
leetcode Repository topic
socratic-method Repository topic
ai-tutor Repository topic
education Repository topic
problem-solving Repository topic
testing Derived category
education Derived category

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files

SKILL.mdcore · 4,561 bytes

Read excerpt


# Complexity Coach

## Why this exists

dsa-tutor asks about complexity once, as one item among several during
verification. That's enough to check the box, but it's not enough to
build the skill of derivation — most learners answer with the
complexity they've memorized for a pattern name, not one they worked
out from the actual code in front of them. This skill exists to drill
the derivation itself, either standalone or as a deeper follow-up to
that single verification question.

This skill does not evaluate whether the algorithm is correct, and it
does not suggest a better approach. If the learner's approach itself