How to Reverse a String in Golang
The challenge
Complete the solution so that it reverses the string passed into it.
'world' => 'dlrow'
'word' => …Go
101 articles about go development, tools, and best practices
How to Find the Last Digit of a Huge Number in Golang
The challenge
For a given list [x1, x2, x3, ..., xn] compute the last (decimal) digit of x1 ^ (x2 ^ (x3 ^ (... ^ xn))).
Example:
last_digit({3, 4, 2}, …How to Circularly Sort an Array in Golang
The challenge
An array is circularly sorted if the elements are sorted in ascending order but displaced, or rotated, by any number of steps.
Complete …
Read Article →How to Alternate String Casing in Golang
The challenge
Write a function toWeirdCase (weirdcase in Ruby) that accepts a string, and returns the same string with all even indexed characters in …
Roman Numerals Decoder in Golang
The challenge
Create a function that takes a Roman numeral as its argument and returns its value as a numeric decimal integer. You don’t need to …
Read Article →How to Subtract from Time in Golang
The challenge
Clock shows h hours, m minutes and s seconds after midnight.
Your task is to write a function that returns the time since midnight in …
Read Article →Bit Counting in Golang
The challenge
Write a function that takes an integer as input, and returns the number of bits that are equal to one in the binary representation of …
Read Article →How to Find Next Higher Number with Same Bits in Golang
The challenge
Find the next higher number (int) with same ‘1’- Bits.
I.e. as much 1 bits as before and output next higher than input. Input is …
How to Find the First Non-Repeating Character in Golang
The challenge
Write a function named first_non_repeating_letter that takes a string input, and returns the first character that is not repeated …
How to Find the Last Fibonacci Digit in Golang
The challenge
Return the last digit of the nth element in the Fibonacci sequence (starting with 1,1, to be extra clear, not with 0,1 or other …
Read Article →How to Validate an IP Address in Golang
The challenge
Write an algorithm that will identify valid IPv4 addresses in dot-decimal format. IPs should be considered valid if they consist of four …
Read Article →Formatting Strings with Fmt in Golang
Fmt provides printing to standard output (usually the console) and formatting of strings capabilities.
The basics of Print and Println
The main …
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