How to Find the Smallest Integer in the Array in Golang
The challenge
Given an array of integers your solution should find the smallest integer.
For example:
- Given
[34, 15, 88, 2]your solution will return …
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104 articles about go development, tools, and best practices
Forming Unique Array Combinations in Golang
The challenge
You are given an array of arrays and your task will be to return the number of unique arrays that can be formed by picking exactly one …
Read Article →How to Sum all the Integers in a String in Golang
The challenge
Implement a function that calculates the sum of the integers inside a string. For example, in the string …
Read Article →How to Reverse a String in Golang
The challenge
Complete the solution so that it reverses the string passed into it.
'world' => 'dlrow'
'word' => …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 …
Read Article →How to Read from Standard Input in Golang
Reading from “standard input” is really useful if you are making a command-line application and require user input.
package main
import ( …How to Install Golang on WSL/WSL2
If you need to install Golang on WSL under Windows 10 or higher, you can follow these few steps.
First remove any old versions lying around
sudo rm …How to Repeat by String Index in Golang
The challenge
Create a function that repeats each character by the amount of it’s index value of the original string.
Examples: …
Read Article →Calculate the Third Angle of a Triangle in Go
The challenge
You are given two interior angles (in degrees) of a triangle.
Write a function to return the 3rd.
Note: only positive integers will be …
Read Article →How to Detect if Numbers are in Order in Golang
The challenge
In this challenge, your function receives an array of integers as input. Your task is to determine whether the numbers are in ascending …
Read Article →Alternate Capitalization in Golang
The challenge
Given a string, capitalize the letters that occupy even indexes and odd indexes separately, and return as shown below. Index `` will be …
Read Article →Check if a String is Uppercase in Golang
The challenge
Create a method IsUpperCase to see whether the string is ALL CAPS. For example:
type MyString string
MyString("c").IsUpperCase() …How to UpperCase a String in Golang
In Go, there are multiple ways to make a string UpperCase, each of them are by using the strings package.
Option 1 (strings.ToUpper):
func ToUpper(str …
Return the Shortest Words in Golang
The challenge
Given a string of words, return the length of the shortest word(s).
The input string will never be empty and you do not need to account …
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