65 lines
1.1 KiB
Go
65 lines
1.1 KiB
Go
// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"bufio"
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"fmt"
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"os"
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"strconv"
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"strings"
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)
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func main() {
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var (
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// use a comparable struct for the keys
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visits = make(map[string]int)
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domains []string
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dupDomains = make(map[string]bool)
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line int
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)
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in := bufio.NewScanner(os.Stdin)
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for in.Scan() {
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line++
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fields := strings.Fields(in.Text())
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if len(fields) != 2 {
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fmt.Printf("Wrong input: %v\n", fields)
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return
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}
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domain, svisit := fields[0], fields[1]
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dvisit, err := strconv.Atoi(svisit)
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if err != nil {
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fmt.Printf("Wrong input: %q (line #%d)\n", svisit, line)
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return
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}
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visits[domain] += dvisit
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// only add the domain once
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if !dupDomains[domain] {
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domains = append(domains, domain)
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dupDomains[domain] = true
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}
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}
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// print the summary grouped by domain
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var total int
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for _, d := range domains {
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v := visits[d]
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fmt.Printf("%-25s -> %d\n", d, v)
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total += v
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}
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fmt.Printf("\n%-25s -> %d\n", "TOTAL", total)
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}
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