Let k be the encryption key for a Caesar cipher. Then, the decryption key is 26-k. One of the characteristics of a public key system is that the encryption and decryption keys are different. Why is the Caesar cipher not a public key system, even though its encryption and decryption keys are different

Write a method replacekey in the minheap class with the following signature: public void replacekey(integer oldkey, integer newkey) the method will replace the first occurrence of oldkey with the newkey, and restore the min-heap property after the change. if the oldkey does not exist in the heap, the method prints an appropriate message and returns without changing the heap. example: suppose our binary heap object (bh) has the following keys: *** 4 6 7 32 19 64 26 99 42 54 28 then the method call: bh.replacekey (oldkey integer(54), newkey integer(2))

How can you tell if someone sent you a text message to your email instead of a email

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