HackerRank Java - Stdin and Stdout 1

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I don't understand this. The challenge was not completed. The integers were not printed. The "Hi" string was not printed! The scanner read nothing! There was no input! WTF!?

wulfmaer
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Is this Scanner or is this StdOut / StdIn ? These are two different things isn't it?

mathquik
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how did it print the numbers if it wasn't present in code i mean numbers please do tell me !!!

sakshamjain
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How it will take number without giving in the code please explain this

abinaya
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It shows an compilation error how to resolve this

abinaya