Sigmoid Interview Questions — 6 DSA Problems

6 problems with full solutions in Python, Java, C++, JavaScript, Go, Rust.

Most frequently asked Sigmoid LeetCode questions for software engineering interviews.

• Binary Tree Zigzag Level Order Traversal (MEDIUM) — Tree, Breadth-First Search, Binary Tree
• Product of Array Except Self (MEDIUM) — Array, Prefix Sum
• Group Anagrams (MEDIUM) — Array, Hash Table, String, Sorting
• Reverse Nodes in k-Group (HARD) — Linked List, Recursion
• Max Consecutive Ones III (MEDIUM) — Array, Binary Search, Sliding Window, Prefix Sum
• Boats to Save People (MEDIUM) — Array, Two Pointers, Greedy, Sorting