I have tried different approcahes without using additional space

#1

I have tried different approaches without using additional space. Can you please check and tell me what is the thing i am missing?
Its not the last submission. Check for all submissions

#2

@akhil54,
hi send me the code on http://ide.codingblocks.com/

#3

@akhil54 hope the doubt is clear, u have scored 100 in the question

#4

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