Some coding challenges with given function and test result (leetcode style) on various languages
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General questions about my last experience, the salary I looked for and my current job position (lead, technical, etc). Hackerrank test is pretty similar to LeetCode ones, just search for top tech companies code questions. They change the title of the problem but the exercise itself is the same :)
Assume we have a table which only one row can have the value of 'true' for the column named 'Primary'. Draw 3 flowcharts for insert, update and delete methods.
Write a function that finds the root of a number
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
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