QUESTION 1:
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Description : Write a Java program to sum values of an array
        Input a[]= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
        Output   = 55

QUESTION 2:
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Description : Write a Java program to calculate the average value of array elements.
        Input a[]= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
        Output   = average = 7.0 

QUESTION 3:
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Description : Write a Java program to remove duplicates from array
        Input  a[]= {10,10,20,50,60,80,60,50}
        Output a[]= {10,20,50,60,80}

QUESTION 4:
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Description : Write a Java program to test if an array contains a specific value
        Input  a[]= {10,30,50,80,120,111}
        key=12
	output=not found
	
Question 5:
Description : Find first non-repeating element in a given Array of integer
	Input a[]={11,12,14,15,11,14}
	output= 12