package main

import (

"fmt"

_"math"

)

func main() {

layers := 5 //金字塔层数

 

fmt.Println("半个金字塔：")

//金字塔层数

for i := 1; i <= layers; i++ {

//每列显示的*数量

for x := 1; x <= i; x++ {

fmt.Printf("*")

}

fmt.Println()

}

 

fmt.Printf("\n\n半个金字塔：\n")

//金字塔层数

for i := 1; i <= layers; i++ {

tmp := i * 2 - 1

//每列显示的*数量

for x := 1; x <= tmp; x++ {

fmt.Printf("*")

}

fmt.Println()

}

 

fmt.Printf("\n\n实心金字塔：\n")

//金字塔层数

for i := 1; i <= layers; i++ {

//空格规律：总层数 - 当前层数

space := layers - i

//打印空格

for j := 1; j <= space; j++ {

fmt.Printf(" ")

}

tmp := i * 2 - 1

//每列显示的*数量

for x := 1; x <= tmp; x++ {

fmt.Printf("*")

}

fmt.Println()

}

 

fmt.Printf("\n\n空心金字塔：\n")

//金字塔层数

for i := 1; i <= layers; i++ {

//空格规律：总层数 - 当前层数

space := layers - i

//打印空格

for j := 1; j <= space; j++ {

fmt.Printf(" ")

}

tmp := i * 2 - 1

//每列显示的*数量

for x := 1; x <= tmp; x++ {

if x == 1 || x == tmp || i == layers {

fmt.Printf("*")

} else {

fmt.Printf(" ")

}

}

fmt.Println()

}

 

fmt.Printf("\n\n实心菱形：\n")

for i := 1; i <= layers; i++ {

//打印空格

for k := 1; k <= layers-i; k++ {

fmt.Printf(" ")

}

for x := 1; x <= 2*i-1; x++ {

fmt.Printf("*")

}

fmt.Println()

}

for i := layers-1; i > 0; i-- {

for k := 1; k <= layers-i; k++ {

fmt.Printf(" ")

}

for x := i*2-1; x > 0; x-- {

fmt.Printf("*")

}

fmt.Println()

}

 

fmt.Printf("\n\n空心菱形：\n")

for i := 1; i <= layers; i++ {

for k := 1; k <= layers-i; k++ {

fmt.Printf(" ")

}

for x := 1; x <= 2*i-1; x++ {

if x == 1 || x == 2*i-1 {

fmt.Printf("*")

} else {

fmt.Printf(" ")

}

}

fmt.Println()

}

for i := layers-1; i > 0; i-- {

for k := 1; k <= layers-i; k++ {

fmt.Printf(" ")

}

for x := 2*i-1; x > 0; x-- {

if x == 1 || x == 2*i-1 {

fmt.Printf("*")

} else {

fmt.Printf(" ")

}

}

fmt.Println()

}

}