- Merge-Interval
Given a collection of intervals, merge all overlapping intervals.
For example:
Given [1,3],[2,6],[8,10],[15,18]
return [1,6],[8,10],[15,18]
- Binary Tree Level Order Traversal
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level).
For example:
Given binary tree [3,9,20,null,null,15,7],
3
/ \
9 20
/ \
15 7
return its level order traversal as:
[
[3],
[9,20],
[15,7]
]
- Basic sorting
- Fibonacci number
- Money change
- Palindrome number check
- Prime number check
- Reverse string
- Linked table
- Contain string
- Decimal convert to binary or vise-versa
- Print pyramid with "*"