在此程序中，您將學(xué)習(xí)在Kotlin中創(chuàng)建金字塔，半金字塔，倒金字塔，Pascal三角形和Floyd三角形。
| 源代碼列表 |
|---|
| 使用*，數(shù)字和字符打印三角形的代碼 |
| 使用*和數(shù)字打印倒三角形的代碼 |
| 打印完整金字塔的代碼 |
| 打印帕斯卡三角形的代碼 |
| 打印弗洛伊德三角形的代碼 |
以下是等效的Java代碼：創(chuàng)建金字塔和圖案的Java程序
* * * * * * * * * * * * * * *
源代碼
fun main(args: Array<String>) {
val rows = 5
for (i in 1..rows) {
for (j in 1..i) {
print("* ")
}
println()
}
}1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
源代碼
fun main(args: Array<String>) {
val rows = 5
for (i in 1..rows) {
for (j in 1..i) {
print("$j ")
}
println()
}
}A B B C C C D D D D E E E E E
源代碼
fun main(args: Array<String>) {
val last = 'E'
var alphabet = 'A'
for (i in 1..last - 'A' + 1) {
for (j in 1..i) {
print("$alphabet ")
}
++alphabet
println()
}
}* * * * * * * * * * * * * * *
源代碼
fun main(args: Array<String>) {
val rows = 5
for (i in rows downTo 1) {
for (j in 1..i) {
print("* ")
}
println()
}
}1 2 3 4 5 1 2 3 4 1 2 3 1 2 1
源代碼
fun main(args: Array<String>) {
val rows = 5
for (i in rows downTo 1) {
for (j in 1..i) {
print("$j ")
}
println()
}
}* * * * * * * * * * * * * * * * * * * * * * * * *
源代碼
fun main(args: Array<String>) {
val rows = 5
var k = 0
for (i in 1..rows) {
for (space in 1..rows - i) {
print(" ")
}
while (k != 2 * i - 1) {
print("* ")
++k
}
println()
k = 0
}
}1 2 3 2 3 4 5 4 3 4 5 6 7 6 5 4 5 6 7 8 9 8 7 6 5
源代碼
fun main(args: Array<String>) {
val rows = 5
var k = 0
var count = 0
var count1 = 0
for (i in 1..rows) {
for (space in 1..rows - i) {
print(" ")
++count
}
while (k != 2 * i - 1) {
if (count <= rows - 1) {
print((i + k).toString() + " ")
++count
} else {
++count1
print((i + k - 2 * count1).toString() + " ")
}
++k
}
k = 0
count = k
count1 = count
println()
}
}* * * * * * * * * * * * * * * * * * * * * * * * *
源代碼
fun main(args: Array<String>) {
val rows = 5
for (i in rows downTo 1) {
for (space in 1..rows - i) {
print(" ")
}
for (j in i..2 * i - 1) {
print("* ")
}
for (j in 0..i - 1 - 1) {
print("* ")
}
println()
}
}1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1
源代碼
fun main(args: Array<String>) {
val rows = 6
var coef = 1
for (i in 0..rows - 1) {
for (space in 1..rows - i - 1) {
print(" ")
}
for (j in 0..i) {
if (j == 0 || i == 0)
coef = 1
else
coef = coef * (i - j + 1) / j
System.out.printf("%4d", coef)
}
println()
}
}1 2 3 4 5 6 7 8 9 10
源代碼
fun main(args: Array<String>) {
val rows = 4
var number = 1
for (i in 1..rows) {
for (j in 1..i) {
print("$number ")
++number
}
println()
}
}