此部分主要的題目有關 貪心演算法 (Greedy algorithm), 基本資料結構 (Data structure), 排序演算法 (Sorting), 搜尋演算法 (Searching)

• Distinct Numbers
• Apartments
• Ferris Wheel
• Concert Tickets
• Restaurant Customers
• Movie Festival
• Sum of Two
• Maximum Subarray Sum
• Stick Lengths
• Missing Coin Sum
• Collecting Numbers
• Collecting Numbers II
• Playlist
• Tower
• Traffic Lights