equals() vs. == What are the differences? Why have both? int i = 5; vs. Integer i = 5; What are the differences? Why have both? How is the interface Comparable being used, and why is it needed? Checked vs. unchecked exceptions What are the differences? Why have both? What is immutability? What is the rationale to keep some data structures in the code immutable?
given an array of any integers (negative, positive, not sorted..anything) - and also a target sum - return all the pairs of numbers from the array that sums to this target value . pairs should be duplicated if there are duplicated numbers in the original array Array: 3, 5, 6, 6, -2, 11.. Target = 9 output: (3,6), (3,6), (-2,11)
1. Design a datastructure that implements the following methods in O(1) each - setValue(invdex, value), getValue(index), setAllValues(value)
In the second interview: given an array, and a function rand(n) which return an integer between 0 to n, return a permutation of the array.
Dp on trees and Sliding window
Basic .NET Core questions and related
Overall assessment of skills, knowledge, and concepts
Technical test/task if the basic interview is cleared
Could you tell me about yourself?
Design a redis like cache system
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