Editorial: LC premium set 2

Good for whiteboarding

• Longest Line of Consecutive One in Matrix
  • Mutliple solutions
• Bomb Enemy
• Closest Binary Search Tree Value II
• Add Bold Tag in String
• 3Sum Smaller
• Insert into a Sorted Circular Linked List
• Binary Tree Longest Consecutive Sequence II

Rearrange String k Distance Apart

• Took me too long

LFU Cache

• Solve it with LL

Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree

• My optimization was wrong

Candy Crush

• Official solution is cleaner than mine

Tree Diameter

• Multiple solutions