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Java (not to be confused with JavaScript) is a class-based, object-oriented, strongly typed, reflective language and run-time environment (JRE). Java programs are compiled to bytecode and run in a virtual machine (JVM) enabling a "write once, run anywhere" (WORA) methodology.

1 vote

Sum of the digits is prime or not

(So I wrote all this before I noticed your loop conditional used i * i <= num. I still think the below is valuable information, so I'll post it anyway. As far as whether it's cheaper to multiply each …
jdmichal's user avatar
  • 391
2 votes
Accepted

Insert sort on a linked list

Algorithmically, your implementation seems fine. One improvement would be to initialize the sortedList to the first node right away. This necessitates some error checking up front, which I think is be …
jdmichal's user avatar
  • 391