100 cases of go language

Go Language 100 Example exercises

I'm learning Python When , Have done the rookie tutorial 100 Example exercises , however Golang There are fewer exercises , But you can refer to Go Language Bible , There are some exercises in it , Decided to take the rookie tutorial Python100 Examples Go Brush the language again , Consolidate your knowledge ~
Novice tutorial Python100 example ：https://www.runoob.com/python/python-100-examples.html

1. There are four numbers ：1、2、3、4, How many different and unrepeated three digit numbers can be formed ？ How many are each ？

package main

import "fmt"

// subject ： There are four numbers ：1、2、3、4, How many different and unrepeated three digit numbers can be formed ？ How many are each ？

func main()  {
    
	for i:=1;i<=4;i++{
    
		for j:=1;j<=4;j++{
    
			for k:=1;k<=4;k++{
    
				if (i!=j) && (i!=k) && (j!=k){
    
					fmt.Print(i)
					fmt.Print(j)
					fmt.Print(k)
					fmt.Println()
					//  If written fmt.Print(i,j,k)  The output 1 2 3
				}
			}
		}
	}
}

2. The bonus paid by the enterprise is based on the profit commission . profits (I) Below or equal to 10 Ten thousand yuan , Bonus can be raised 10%; Profit is higher than 10 Ten thousand yuan , lower than 20 Ten thousand yuan , lower than 10 For the part of ten thousand yuan, press 10% Royalty , higher than 10 Part of ten thousand yuan , It's a percentage 7.5%;20 Wan to 40 Ten thousand hours , higher than 20 Part of ten thousand yuan , It's a percentage 5%;40 Wan to 60 Ten thousand times is higher than 40 Part of ten thousand yuan , It's a percentage 3%;60 Wan to 100 Ten thousand hours , higher than 60 Part of ten thousand yuan , It's a percentage 1.5%, higher than 100 Ten thousand yuan , exceed 100 For the part of ten thousand yuan, press 1% Royalty , Input the profit of the month from the keyboard I, Ask for the total amount of bonus payable ？

package main

import "fmt"

func main()  {
    
	//  It's here for convenience , All defined as float32 type 
	var i float32
	fmt.Print(" Please enter enterprise net profit :")
	fmt.Scanln(&i)

	arr := []float32{
    1000000,600000,400000,200000,100000,0}
	rat := []float32{
    0.01,0.015,0.03,0.05,0.075,0.1}

	r := float32(0)
	for idx:=0;idx<len(arr);idx++{
    
		if i>arr[idx]{
    
			r = r + (i-arr[idx])*rat[idx]  //  Calculate the bonus part 
		}
	}
	fmt.Printf(" The total amount of bonus paid is ：%.2f",i+r)
}

3. An integer , It adds 100 And then there's a complete square , Plus 268 It's a complete square again , What is the number ？
Be careful ： There is a problem with the title of the novice tutorial , Should be 268 No 168

package main

import (
	"fmt"
	"math"
)

func main() {
    
	i := 0
	for i<100000{
    
		x := int(math.Sqrt(float64(i+ 100)))
		y := int(math.Sqrt(float64(i+ 268)))

		if x*x == i+100 && y*y == i+268 {
    
			fmt.Printf(" The number is  %d\n", i)
		}
		i++
	}
}

To be updated …