How do you rotate an AVL tree?

Q Name the 'Butcher of Bosnia' arrested in May 2011 after 16 years evasion following his indictment for war crimes?
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Q ‘Reading books in one’s youth is like looking at the moon in one’s courtyard; and reading books in old age is like looking at the moon on an open terrace’.
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Q Name the fruit of Plantaginaceae Family ?
Q What is transfer function?
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Q When an information security policy has been designed, it is MOST important that the information security policy be: A. stored offsite. B. written by IS management. C. circulated to users. D. updated frequently.
Q Can the "if" function be used in comparing strings?
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Q Which directive is used in jsp custom tag?