func main() {
euler.Init(10, "Find the sum of all the primes below N.")
euler.PrintTime("N = 10 | Using local Sieve without []int. Result: %v, Nanoseconds: %d\n", solution, 10)
euler.PrintTime("N = 10 | Using packaged PrimesUpTo. Result: %v, Nanoseconds: %d\n", solution2, 10)
euler.PrintTime("N = 2e6 | Using local Sieve without []int. Result: %v, Nanoseconds: %d\n", solution, int(2e6))
euler.PrintTime("N = 2e6 | Using packaged PrimesUpTo. Result: %v, Nanoseconds: %d\n", solution2, int(2e6))
}
func main() {
euler.Init(14, "Using the rules:\n\n"+
" n -> n/2 (n is even)\n"+
" n -> 3n + 1 (n is odd)\n\n"+
"Which starting number, under one million, produces the longest chain?")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution, int(1e6))
}
func main() {
primes := euler.PrimesUpTo(100000)
euler.Init(21, "Evaluate the sum of all the amicable numbers under...")
euler.PrintTime("Under 220 | Result: %v, Nanoseconds: %d\n", solution, 220, &primes)
euler.PrintTime("Under 284 | Result: %v, Nanoseconds: %d\n", solution, 284, &primes)
euler.PrintTime("Under 10000 | Result: %v, Nanoseconds: %d\n", solution, 10000, &primes)
euler.PrintTime("Under 100000 | Result: %v, Nanoseconds: %d\n", solution, 100000, &primes)
}
func main() {
euler.Init(7, "What is the Nst prime number?")
euler.PrintTime("N = 6 | Appending primes. Result: %v,\t\tNanoseconds: %d\n", AppendingPrimes, 6)
euler.PrintTime("N = 6 | Sieve of Eratosthenes. Result: %v,\t\tNanoseconds: %d\n", Sieve, 6)
euler.PrintTime("N = 6 | With Packaged Sieve. Result: %v,\t\tNanoseconds: %d\n", PackagedSieve, 6)
euler.PrintTime("N = 6 | With the overview code. Result: %v,\t\tNanoseconds: %d\n", Overview, 6)
euler.PrintTime("N = 10001 | Appending primes. Result: %v,\tNanoseconds: %d\n", AppendingPrimes, 10001)
euler.PrintTime("N = 10001 | Sieve of Eratosthenes. Result: %v,\tNanoseconds: %d\n", Sieve, 10001)
euler.PrintTime("N = 10001 | With Packaged Sieve. Result: %v,\tNanoseconds: %d\n", PackagedSieve, 10001)
euler.PrintTime("N = 10001 | With the overview code. Result: %v,\tNanoseconds: %d\n", Overview, 10001)
}
func main() {
euler.Init(4, "Find the largest palindrome made from the product of two N-digit numbers.")
euler.PrintTime("N = 2 | Result: %v, Nanoseconds: %d\n", solution, 2)
euler.PrintTime("N = 3 | Result: %v, Nanoseconds: %d\n", solution, 3)
}
func main() {
euler.Init(16, "What is the sum of the digits of the number 2^1000?")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution, math.Pow(2, 1000))
}
func main() {
euler.Init(20, "Find the sum of the digits in the number 100!")
euler.PrintTime("For 10 | Result: %v, Nanoseconds: %d\n", solution, 10)
euler.PrintTime("For 100 | Result: %v, Nanoseconds: %d\n", solution, 100)
}
func main() {
euler.Init(8, "Find the greatest product of five consecutive digits in the 1000-digit number.")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution)
}
func main() {
euler.Init(11, "What is the greatest product of four adjacent numbers in the same direction (up, down, left, right, or diagonally) in the 20×20 grid?")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution)
}
func main() {
euler.Init(5, "What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?")
euler.PrintTime("Index by index. Result: %v, Nanoseconds: %d\n", lcm, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
euler.PrintTime("Generated sequence. Result: %v, Nanoseconds: %d\n", lcm, euler.Sequence(1, 20)...)
}
func main() {
euler.Init(2, "By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution, int(4e6))
}
func main() {
euler.Init(6, "Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution, 100)
}
func main() {
euler.Init(15, "How many such routes are there through a 20×20 grid?")
euler.PrintTime("Combinatorial Solution. Result: %v, Nanoseconds: %d\n", solution, 20)
}
func main() {
euler.Init(3, "What is the largest prime factor of the number 600851475143 ?")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution, 600851475143)
}
func main() {
euler.Init(19, "How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)?")
euler.PrintTime("Full specs | Result: %v, Nanoseconds: %d\n", solution, 1901, 2000)
euler.PrintTime("Smaller code | Result: %v, Nanoseconds: %d\n", solution2, euler.Sequence(1901, 2000)...)
euler.PrintTime("Math | Result: %v, Nanoseconds: %d\n", solution3, 100)
}
func main() {
euler.Init(13, "Work out the first ten digits of the sum of the following one-hundred 50-digit numbers.")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution)
}
func main() {
euler.Init(12, "What is the value of the first triangle number to have over N divisors?")
euler.PrintTime("N = 5 | Result: %v, Nanoseconds: %d\n", solution, 5)
euler.PrintTime("N = 500 | Result: %v, Nanoseconds: %d\n", solution, 500)
}
func main() {
euler.Init(1, "Find the sum of all the multiples of 3 or 5 below 1000.")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution, 1000)
}
func main() {
euler.Init(9, "There exists exactly one Pythagorean triplet for which a + b + c = 1000.")
euler.PrintTime("Result: %v, Nanoseconds: %d\n", solution, 1000)
}
func main() {
euler.Init(17, "If all the numbers from 1 to 1000 (one thousand) inclusive were written out in words, how many letters would be used?")
euler.PrintTime("N = 342 | Result: %v, Nanoseconds: %d\n", solution, 342)
euler.PrintTime("N = 115 | Result: %v, Nanoseconds: %d\n", solution, 115)
euler.PrintTime("N = 1000 | Result: %v, Nanoseconds: %d\n", solution, euler.Sequence(1, 1000)...)
}
func main() {
euler.Init(22, "What is the total of all the name scores in the file?")
euler.PrintTime("For COLIN | Result: %v, Nanoseconds: %d\n", solution, "COLIN")
euler.PrintTime("For the file | Result: %v, Nanoseconds: %d\n", solution, euler.Download("https://projecteuler.net/project/names.txt"))
}
func main() {
euler.Init(18, "Find the maximum total from top to bottom of the given triangle.")
euler.PrintTime("Problem 18 | Result: %v, Nanoseconds: %d\n", solution, triangle_18)
euler.PrintTime("Problem 67 | Result: %v, Nanoseconds: %d\n", solution, triangle_67)
}