Had Three Sections
Q1. House Robber
House Robber-1
(Differently worded though.)
Q2.
Find the number of subarrays that can be removed, such that the remaining array is strictly increasing (non-empty).
1574. Shortest Subarray to be Removed to Make Array Sorted
Q3 Subarrays with exactly k different integers
Subarrays with K Different Integers
(Again, differently worded)
Edit : Added 2nd Problem Link.