validate a binary tree
Software Development Engineer Interview Questions
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How to detect overlapping area for two rectangles
The question was: Given a text written in some language where the alphabets are represented with 1 byte or 2 byte. But the one byte alphabets always have their MSB 1 and the 2 byte charecters always have their MSB 0. Now when at some point user presses a back space how many bytes are to be deleted to erase the alphabet?
Q: In an array that has one value for more than half of its elements, how can you find that value?
Find a duplicate integer in a list of length K with integers 1...K-1 and one duplicate. Do so in O(n) time with constant space.
How to create excel header string
Write a function that reverses the letters in each word using only one char buffer. E.g.: "I work at Microsoft" to "I krow ta tfosorciM"
how can a particular application be tested apart from testing its functionality
Write a function to convert a number in Roman numeral form to a decimal representation.
How many gas stations are there in California?
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