Computers and Technology, 11.03.2020 00:05 parosil

How do you do these questions? The first two questions could have multiple answers and the third is one answer only.

How do you do these questions? The first two questions could have multiple answers and the third is

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Answer from: 20578jb

1. c is the correct option, a and b are false

2. It is always desirable that all the object instance variables contribute to calculating the hash code.

3..( getfirstname +getSecondName).Hashcode()

Explanation:

1. Two same hashcode cannot be in same hashset, and if two keys are equal then it does not mean, their hash code should also be equal. And if a key is greater, then its hashcode will definitely be greater.

2. Each object instance variable must contribute to calculating the hash code, as we need one hash code for each key or object. However, set.Contains(Obj) must return true if we have a hash code for that object, as it must be present in HashSet then.

3. Also for each of the key we need one hash code, and here the first name and the last name together are making one key, and hence we should concatenate both, and then generate a hash code for that concatenated key, and hence the correct option is (getFirstName + getSecondName).Hashcode()

Answer from: Quest

My favorite is "be concise."have you ever received an email and had to read a page full of information? by the time you finished reading it, you had to re-read it? i have even hit "reply" so that i could break it down into separate paragraphs and send it back to myself.what is concise? get to the point, fast. when opening an email like this, some will close it or print it to read later.i learned to use the subject line to prepare the reader for content. such as, "need on (blank), " "info only re: (blank)," "request input on (blank)," "read before (blank) meeting." these are just some.if you are asking for something, make that your first sentence. follow this by who, what, when, where, and how. use these, as necessary. example; (1) who (who needs it and or who does it), (2) what (specific description of what is needed), (3) when (specific, i need this by 8: 00 am monday or i need this by 10: 00 am today), (4) where (does it have to be printed and taken to someone, maybe the place of the meeting), (5) how (i need it scanned or faxed back to me at this email address, provide me with a hard copy).do not send yet. re-read it. did some spell check change a word? maybe let someone else read it for understanding. you want to avoid multiple emails asking for clarification. if important, put a read receipt on it. you will know it was opened, not necessarily read.end with a you.

Answer from: Quest

A. newton 's fourth law a liquid in a confined space is not compressed.

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