fix: daily inspection fix missing headers and whitespace issues

[tkzzzzzz6]

Summary by CodeRabbit

• Chores
  • Added explicit C++ standard library headers (<iostream>, <vector>, <algorithm>, <string>) across multiple source files for improved code clarity.
  • Fixed line ending formatting in one Python file for consistency.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 02142ebc-4d86-458c-95c8-3a349f1d2e7d

📥 Commits

Reviewing files that changed from the base of the PR and between 980c20b and a01c977.

📒 Files selected for processing (5)

• blue_braige/第32场蓝桥·算法入门赛·百校联赛/2.cpp
• leetcode/Study Plan/21/21_递归.py
• niuke/daily_problem/25_10-21铁盘整理/others/ida.cpp
• niuke/daily_problem/26-3-4多米诺骨牌/1.cpp
• niuke/daily_problem/26_01-31特殊的科学计数法/1.cpp

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📝 Walkthrough

Walkthrough

This PR adds explicit C++ standard library includes to five files across algorithm practice directories and normalizes line endings in one Python file. No functional code logic, algorithms, control flow, or API signatures are modified.

Changes

Cohort / File(s)	Summary
C++ Header Includes blue_braige/.../2.cpp, niuke/daily_problem/26-3-4.../1.cpp, niuke/daily_problem/26_01-31.../1.cpp	Added explicit standard library includes (<iostream>, <vector>, <algorithm>, <string>) while retaining existing broad headers. No logic changes.
C++ Line Ending & Headers niuke/daily_problem/25_10-21.../ida.cpp	Added explicit <iostream> include and normalized line endings from CRLF to LF. Algorithm and control flow remain unchanged.
Python Line Ending Normalization leetcode/Study Plan/21/21_递归.py	Removed Windows-style carriage returns and normalized line endings to Unix format. All function signatures and logic in ListNode and Solution.mergeTwoLists() remain identical.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 With headers now explicit, code stands tall and bright,
Line endings all unified from left to right,
No logic twisted, no algorithms bent,
Just clarity in includes—a rabbit's intent! ✨

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch auto-fix-daily-inspection-20260411

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[Copilot]

Pull request overview

This PR appears intended to resolve issues found during a “daily inspection” process, specifically addressing missing headers and whitespace formatting problems.

Changes:

• Fix missing headers in affected files.
• Clean up whitespace / formatting issues.

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