Category: c / c++

Given a sequence of n integers arr, determine the lexicographically smallest sequence which may be obtained from it after performing at most k element swaps, each involving a pair …

Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window. Example: MovingAverage m = new MovingAverage(3); m.next(1) = 1 …

Given a pattern and a string str, find if str follows the same pattern. Here follow means a full match, such that there is a bijection between a letter …

Given a string s containing only lower case English letters and the ‘?’ character, convert all the ‘?’ characters into lower case letters such that the final string does …

The C++ STL min_element, max_element and minmax_element (C++ 11) are useful functions from header algorithms to get the min, max, and min-and-max iterator from a given range of iterators. …