Interview question was given a grid of 9x9 sudoku with numbers filled in already, you have to check if it's a valid suoku.
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Describe an algorithm that will take in a large input of English words that may contain duplicate. Then return only unique words from the input.
Given an array of character you must delete all the characters that got repeated 3 or more times consecutively and add '0' in the end of the array for every deleted character Example: "aabbbbcdddee" -> "aacee0000000" "22221" ->"00001 " The problem must be solved in: O(1) memory O(n) time And you can't overwrite a cell in the array more than once.
Given a value in a binary search tree, write an algorithm that returns the next greatest value. The tree is assumed to contain the given value.
what was a technical difficulty and how have you overcome it.
Dynamic programming questions
Given two strings, find if they differ by exactly two letters.
How would you count the number of words in a string consisting of uneven number of spaces between words( not dictionary words)? With and without library functions.
What are Abstraction, Encapsulation, Polymorphism, and Inheritance?
Explain access modifier in Java
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