Shisui questions

• Divide N people into K groups: Why is the big O of this algorithim O(N^2 * K)?
• Reverse Integer leetcode: Why does overflow occur only if 7 or greater is added to INT_MAX?
• How does pointer comparison work in C? Is it ok to compare pointers that don't point to the same array?
• When removing a node, why isn't it necessary to set that node's next to null?

Shisui answers