82 lines
1.4 KiB
Go
82 lines
1.4 KiB
Go
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// 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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"fmt"
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"strings"
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)
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func main() {
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//
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// DAILY REQUESTS DATA
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//
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reqs := []int{
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500, 600, 250,
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200, 400, 50,
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900, 800, 600,
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750, 250, 100,
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100, 150,
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}
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//
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// There are 3 requests per day
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//
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const N = 3
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//
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// Allocate the slice efficiently with the exact size needed
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//
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l := len(reqs)
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size := l / N
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if l%N != 0 {
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size++
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}
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daily := make([][]int, 0, size)
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//
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// Group the `reqs` per day into a slice named: `daily`
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//
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for N < len(reqs) {
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daily = append(daily, reqs[:N]) // add the current batch of nums to the `groups`
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reqs = reqs[N:] // move the slice pointer for the next batch
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}
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//
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// Add the residual elements to the group (len(reqs) % N)
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//
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daily = append(daily, reqs)
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//
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// Print the header:
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//
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fmt.Printf("%-10s%-10s\n", "Day", "Requests")
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fmt.Println(strings.Repeat("=", 20))
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//
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// Print the data per day along with the totals:
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//
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var grand int
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for i, d := range daily {
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var sum int
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for _, q := range d {
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sum += q
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fmt.Printf("%-10d%-10d\n", i+1, q)
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}
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fmt.Println(strings.Repeat("-", 20))
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fmt.Printf("%10s%-10d\n\n", "", sum)
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grand += sum
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}
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fmt.Printf("%10s%-10d\n", "", grand)
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}
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