Most DSA problems are variations of a few core patterns. If you recognize the pattern, the solution follows: When to Use It

Finding the shortest path in an unweighted graph or tree level-order traversal.

— Donald Knuth

Don't jump straight into your IDE. Professional problem solving follows a structured sequence:

Problem Solving In Data Structures & Algorithms... Apr 2026

Most DSA problems are variations of a few core patterns. If you recognize the pattern, the solution follows: When to Use It

Finding the shortest path in an unweighted graph or tree level-order traversal.

— Donald Knuth

Don't jump straight into your IDE. Professional problem solving follows a structured sequence:


Download the database

This database is publicly available. We provide: 1) the original images(250x250), 2) the aligned images(112x112) and 3) the pair list. Baidu Netdisk(code:328y) , Google Drive

Now, we provide a list to indicate the masked faces. Google Drive Problem Solving in Data Structures & Algorithms...


Contact

For further assistance, please contact , and Weihong Deng.