What's wrong in this https://ide.codingblocks.com/s/412691

#1

what’s wrong in this https://ide.codingblocks.com/s/412691

#2

You ll get java.lang.OutOfMemoryError
use Top-down dp and HashMap, it will work

#3

pls explain why we should unordered_map here

#4

why we cant use array

#5

with the leaking code constantly used, the “cached” results end up consuming a lot of Java heap space and when the leaked memory fills all of the available memory in the heap region and Garbage Collection is not able to clean it, the java.lang.OutOfMemoryError:Java heap space is thrown. That is why we prefer Hashmap over array