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package main | |
import "fmt" | |
import "strings" | |
import "strconv" | |
func isbn10(s string) string { | |
ss := strings.Split(s, "") | |
sum := 0 |
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require_relative 'product' | |
class Checkout | |
attr_reader :checkout_items, :products | |
def initialize | |
@products = Hash.new | |
@checkout_items = [] | |
load_products |
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def is_happy(n): | |
while (n != 1): | |
digits = str(n) | |
sum = 0 | |
i = 0 | |
print n | |
while (i < len(digits)): | |
sum += int(digits[i]) ** 2 | |
i += 1 | |
n = sum |
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# Longest distance between identical numbers in a list ignoring identical numbers in between | |
# e.g. input number of numbers 5, then each number followed by a return | |
# use gets.chomp to get console input | |
n = gets.chomp.to_i | |
h = Hash.new | |
(1..n).each do |i| | |
n = gets.chomp.to_i | |
if h[n] | |
h[n] << i |
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package main | |
import "fmt" | |
func for_loop() { | |
sum := 0 | |
for i := 0; i < 10; i++ { | |
sum += i | |
} | |
fmt.Println(sum) |