Answer / swetcha

A queue(data structure) is a collection of items in which
only the earliest added item may be accessed.

Also known as "first-in, first-out" or FIFO

Answer / kranthi

A Queue is a data structer all the item are held in a row,and
collection of items in which
only the earliest added item may be accessed.

Answer / fahed usman rana

A Queue is such type of data structure in which all the items
are held in a row in such a way that you can replace an item
only from the head of queue and insert only from the tail of
queue. FIFO is used in this Data structure.

Answer / tulsi das pramanik

A queues is similar
to a cheakout line on
the bus stand,
the 1st person on
line is serviced 1st
and the person can
enter the line only
at end.
For this reasion
queues is called a
FIFO(first in first
out).

I'm trying to solve this. But I'm not figuring the right solution. Can some one help what the answer is for the question below? You can use as many variables as you need, there are no negative numbers, all numbers are integers. You do not know the size of the integers, they could be infinitely large, so you can't count on truncating at any point. There are NO comparisons allowed, no if statements or anything like that. There are only four operations you can do on a variable. 1) You can set a variable to 0. 2) You can set a variable = another variable. 3) You can increment a variable (only by 1), and it's a post increment. 4) You can loop. So, if you were to say loop(v1) and v1 = 10, your loop would execute 10 times, but the value in v1 wouldn't change so the first line in the loop can change value of v1 without changing the number of times you loop. You need to do 3 things. 1) Write a function that decrements by 1. 2) Write a function that subtracts one variable from another. 3) Write a function that divides one variable by another. 4) See if you can implement all 3 using at most 4 variables. Meaning, you're not making function calls now, you're making macros. And at most you can have 4 variables. The restriction really only applies to divide, the other 2 are easy to do with 4 vars or less. Division on the other hand is dependent on the other 2 functions, so, if subtract requires 3 variables, then divide only has 1 variable left unchanged after a call to subtract. Basically, just make your function calls to decrement and subtract so you pass your vars in by reference, and you can't declare any new variables in a function, what you pass in is all it gets.

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