snake_case to CamelCase convention
The snake_case naming convention writes words in lowercase and separates them with underscores. In CamelCase convention, the fir...
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CamelCase to snake_case convention
The CamelCase naming convention capitalizes the first letter of each word. In snake_case convention, words are written in lowerc...
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Finding the Most Frequent Letter in a Text
You are given a text containing various English letters, digits and punctuation symbols. Your task is to find the most frequentl...
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Spreadsheet Column Number
Spreadsheet uses an alphabetic naming system for columns, starting with 'A', 'B', 'C', etc. The column names continue like 'AB',...
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Word Ladder
Given a set of words, and two other words - start and destination,
Find the smallest chain from start to the destination such...