Himanshi on Instagram: "Here are some the famous questions with their LeetCode problem numbers: ### Arrays and Strings 1. Two Sum (LeetCode 1) 2. Longest Substring Without Repeating Characters (LeetCode 3) 3. Product of Array Except Self (LeetCode 238) 4. Maximum Subarray (LeetCode 53) 5. Merge Intervals (LeetCode 56) ### Linked Lists 1. Reverse Linked List (LeetCode 206) 2. Merge Two Sorted Lists (LeetCode 21) 3. Detect Cycle in a Linked List (LeetCode 141) 4. Remove Nth Node From End of List (