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Easy Sequences 88: Double Summation of a Combinatorial Function
Given two positive integers and , , we define the function as the sum of the reciprocals of the products of all combinations o...

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snake_case to CamelCase convention
The snake_case naming convention writes words in lowercase and separates them with underscores. In CamelCase convention, the fir...

2 years ago

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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...

2 years ago

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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...

2 years ago

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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',...

2 years ago

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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...

2 years ago

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x

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x

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x

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x
x

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x

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x

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x
x

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x

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x

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x

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alegebra
x+1

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x
x

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x
x

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addition
x

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addition
x=1

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x
x

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x
x

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x
X

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x
x

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alegrebra
x+1

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x
x

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x
x

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a
algebra

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Finding area of a triangle.
Find the area of an equalateral triangle with sides of 3 inches,

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