Merge 'k' sorted arrays, each array may have max 'n' elements
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Given an integer array, find if the target sum exists as the sum of contiguous elements.
Given a string determine if it consist of valid concatenated words. "dogcatfish" --> true because it can be split int "dog","cat", and fish "dogecatfish" --> false
Reverse a string
Why the potholes have circular opening?
aptitude questions, logical ability, data interpretation,reading comprehention
Given an integer, re-arrange the integer such that first and last digit will be at first and second, second and second last digit will be at third and fourth position from left of the re-arranges integer and so on. Example: Input -> 12345678, Output -> 18273645 Input -> 1234567, Output -> 1726354
How to convert an Optional string to integer without throwing exception
find number of 1's in a number
if i type character 'A' in text file and save it, what will be size of the file
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