- Explain about different types of indexes in MySQL databases and how they work
- Given an array of integer number, find out next immediate largest number for each element in array
- Given a stream of integers, find the first repeating number. 0<=a[i]<=50
- Given an array of continuous integers has only one repeating number in it. find that number
Example: [1,2,3,3,4,5,6,7] Answer: Repeating number is 3
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