While analyzing source code of a large number of open source Java projects, I found Java developers frequently sort in two ways. One is using the `sort()`

method of `Collections`

or `Arrays`

, and the other is using sorted data structures, such as `TreeMap`

and `TreeSet`

.

## LeetCode – Dungeon Game (Java)

Example: -2 (K) -3 3 -5 -10 1 10 30 -5 (P) Java Solution This problem can be solved by using dynamic programming. We maintain a 2-D table. h[i][j] is the minimum health value before he enters (i,j). h[0][0] is the value of the answer. The left part is filling in numbers to the table. … Read more