Interview Questions And Answers 
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There is a number N
If N is divided by 7 the remainder is 1, it can be shown as mod operator.
N%7=1
N%9=2
N%11=3
What is N?
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(130 votes, avg: 3.37)
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Why scope resolution operator (::) cannot be overloaded?
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(69 votes, avg: 2.88)
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- garbage collection can’t call forcibly. why?
- how class file loaded in jvm.
- what is the disadvantages of garbage collection.
- what is system.gc() and run.gc() mathod.
- why finalize() mathod have protected keyword. whenever it is called automatically in a class which have main method.
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(60 votes, avg: 3.02)
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why main method have all needed keyword like public void main?
if i write private in contrast of public then what happen and why?
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(12 votes, avg: 3.58)
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1-Write a function named isSquare that returns 1 if its integer argumentis a square of some integer, otherwise it returns 0. Yourfunction must not use any function or method (e.g. sqrt)that comes with a runtime library or class library!
The signature of the function is
int isSquare(int n)Examples:
if n is return reason 4 1 because 4 = 2*2 25 1 because 25 = 5*5/td> -4 0 because there is no integer that when squared equals -4. (note, -2 squared is 4) 8 0 because the square root of 8 is not an integer. 0 1 because 0 = 0*0 Post An Answer | 2,855 Views |
(26 votes, avg: 3.42)
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An array is said to be hollow if it contains 3 or more zeros in themiddle that are preceded and followed by the same number of non-zero elements.Furthermore, all the zeroes in the array must be in the middle of the array.Write a function named isHollow that accepts an integer array andreturns 1 if it is a hollow array, otherwise it returns 0.
If you are programming in Java or C#, thefunction signature is
int isHollow(int[ ] a)If you are programming in C or C++, thefunction signature is
int isHollow(int a[ ], int len) where len is the number of elements in thearrayExamples:
if the input array is is hollow? reason {1,2,0,0,0,3,4} yes 2 non-zeros precede and follow 3 zeros in the middle {1,1,1,1,0,0,0,0,0,2,1,2,18} yes 4 non-zeros precede and follow the 5 zeros in the middle {1, 2, 0, 0, 3, 4} no There are only 2 zeroes in the middle; at least 3 are required {1,2,0,0,0,3,4,5} no The number of preceding non-zeros(2) is not equal to the number of following non-zeros(3) {3,8,3,0,0,0,3,3} no The number of preceding non-zeros(3) is not equal to the number of following non-zeros(2) {1,2,0,0,0,3,4,0} no Not all zeros are in the middle {0,1,2,0,0,0,3,4} no Not all zeros are in the middle {0,0,0} yes The number of preceding non-zeros is 0 which equals the number of following non-zeros. And there are three zeros “in the middle”. Hint: Write three loops. The first counts thenumber of preceding non-zeros. The second counts the number of zeros in themiddle. The third counts the number of following non-zeros. Then analyze theresults.
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(13 votes, avg: 3.38)
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