Below are the example code for various type of patterns in swift language.
/*
// Question 1: print a square based on input integer.
***
***
***
------------
*/
func printSquare(_ n: Int) {
for _ in 1...n {
for _ in 1...n {
print("*", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printSquare(3)/*
// Question 2: print a ladder star pattern.
*
**
***
****
------------
*/
func printLadderStar(_ n: Int) {
for i in 0..<n {
print("*", terminator: "")
for _ in 0..<i {
print("*", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printLadderStar(4) // Question 3: print a ladder numbers pattern.
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
------------
*/
func printLadderNumber(_ n: Int) {
for i in 1...n {
for j in 1...i {
print(j, terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printLadderNumber(4)/*
// Question 4: print a ladder same numbers pattern
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
------------
*/
func printLadderSameNumber(_ n: Int) {
for i in 1...n {
for _ in 1...i {
print(i, terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printLadderSameNumber(5)/*
// Question 5: print a reverse Ladder start pattern
* * * * *
* * * *
* * *
* *
*
------------
*/
func printReverseLadderStar(_ n: Int) {
for i in 1...n {
for _ in i...n {
print("*", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printReverseLadderStar(5)/*
// Question 6: print a reverse Ladder Numbers pattern
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
------------
*/
func printReverseLadderNumers(_ n: Int) {
for i in 1...n {
for j in i...n {
print(j, terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printReverseLadderNumers(5)/*
// Question 6(b): print a reverse Ladder same Numbers pattern
11111
2222
333
44
5
------------
*/
func printReverseLadderSameNumers(_ n: Int) {
for i in 1...n {
for _ in i...n {
print(i, terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printReverseLadderSameNumers(5)/*
Question 7: print a cone shape pattern/ Print Pyramids
*
***
*****
*/
func printPattern(rows: Int) {
for i in 0..<rows {
let spacesCount = rows - i - 1
let starsCount = 2 * i + 1
// Print spaces
for _ in 0..<spacesCount {
print(" ", terminator: "")
}
// Print stars
for _ in 0..<starsCount {
print("*", terminator: "")
}
print("") // Move to the next line after each row
}
}
let n = 3 // number of rows
printPattern(rows: n)
/*
// Question 8: print reverse cone
*********
*******
*****
***
*
---------------
*/
func printReverseConeStar(_ n: Int) {
for i in stride(from: n, to: 0, by: -1) {
for _ in 1..<(n - i) + 1 {
print(" ", terminator: "")
}
for _ in 1..<(2 * i - 1) + 1{
print("*", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printReverseConeStar(5)/*
// Question 9 : print diamond
*
***
*****
***
*
---------------
*/
func printDiamond(_ n: Int) {
for i in 0..<n {
for _ in i..<n-1 {
print(" ", terminator: "")
}
print("*", terminator: "")
for _ in 0..<i {
print("**", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
for i in stride(from: n-1, to: 0, by: -1) {
for _ in 1..<(n - i) + 1 {
print(" ", terminator: "")
}
for _ in 1..<(2 * i - 1) + 1{
print("*", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printDiamond(3)/*
// Question 10 : print Triangle
*
**
***
****
***
**
*
---------------
*/
func printTriangle(_ n: Int) {
for i in 0..<n {
print("*", terminator: "")
for _ in 0..<i {
print("*", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
for i in 1...n-1 {
for _ in i...n-1 {
print("*", terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printTriangle(3)/*
// Question 11 : Binary digits Right Angle triangle.
1
01
101
0101
10101
---------------
*/
func printBinaryTriangle(_ n: Int) {
for i in 0..<n {
print(i%2 == 0 ? 1 : 0, terminator: "")
for j in 0..<i {
print((i+j)%2 == 0 ? 0 : 1, terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printBinaryTriangle(5)/*
// Question 12 : Print M Star pattern..
1 1
1 2 2 1
1 2 3 3 2 1
1 2 3 4 4 3 2 1
1 2 3 4 5 5 4 3 2 1
---------------
*/
func printMPattern(_ n: Int) {
for i in 1...n {
for j in 1...i {
print(j, terminator: "")
}
for _ in stride(from: n, to: i, by: -1) {
print(" ", terminator: "")
}
for l in stride(from: i, to: 0, by: -1) {
print(l, terminator: "")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printMPattern(4)/*
// Question 13 : Triangle with increment numbers
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
---------------
*/
func printTriangleWithIncrementNumbers(_ n: Int) {
var count = 1
for i in 1...n {
for j in 1...i {
print(count, terminator: " ")
count+=1
}
print("", terminator: "\n")// Helps for printing new line
}
}
printTriangleWithIncrementNumbers(5)/*
// Question 14 : Inclined Triangle with ABCD
A
AB
ABC
ABCD
ABCDE
---------------
*/
func printInclinedTriangleABCD(_ n: Int) {
for i in 1...n {
var ascii = 65
for _ in 1...i {
print(String(UnicodeScalar(ascii)!), terminator: " ")
ascii+=1
}
print("", terminator: "\n")// Helps for printing new line
}
}
printInclinedTriangleABCD(5)/*
// Question 15 : Inverted Triangle with ABCD
ABCDE
ABCD
ABC
AB
A
---------------
*/
func printInvertedTriangleABCD(_ n: Int) {
for i in 1...n {
var ascii = 65
for _ in i...n {
print(String(UnicodeScalar(ascii)!), terminator: " ")
ascii+=1
}
print("", terminator: "\n")// Helps for printing new line
}
}
printInvertedTriangleABCD(5)/*
// Question 16 : Inclined Triangle with ABCD Repetative
A
BB
CCC
DDDD
EEEEE
---------------
*/
func printInclinedTriangleABCDRepetative(_ n: Int) {
var ascii = 65
for i in 1...n {
for _ in 1...i {
print(String(UnicodeScalar(ascii)!), terminator: "")
}
ascii+=1
print("", terminator: "\n")// Helps for printing new line
}
}
printInclinedTriangleABCDRepetative(5)/*
// Question 17 : Inclined Triangle with ABCD Repetative
A
ABA
ABCBA
ABCDCBA
---------------
*/
func printTriangleABCDRepetative(_ n: Int) {
var ascii = 65
for i in 1...n {
for j in 1...n+i-1 {
if(j<n-i+1){
print(" ", terminator: "")
}
else if(j>=n-i+1&&j<n){
print(String(UnicodeScalar(ascii)!), terminator: "")
ascii+=1
}
else if(j==n){
print(String(UnicodeScalar(ascii)!), terminator: "")
}
else if(j>n&&j<=n+i-1){
ascii-=1
print(String(UnicodeScalar(ascii)!), terminator: "")
}
}
// ascii+=1
print("", terminator: "\n")// Helps for printing new line
}
}
printTriangleABCDRepetative(4)/*
// Question 18 : print reverse ABCD on triangle
E
E D
E D C
E D C B
E D C B A
---------------
*/
func printReverseABCD(_ n: Int) {
var ascii = 65
for i in 0..<n {
for j in 0..<i+1 {
print(String(UnicodeScalar(ascii+n-1-j)!), terminator: " ")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printReverseABCD(5)/*
// Question 19 : print Triangle With Hole
*******
*** ***
** **
* *
** **
*** ***
*******
---------------
*/
func printTriangleHole(_ n: Int) {
var a = n
var b = n
for _ in 1..<n {
for j in 1..<2*n {
if(j>a && j<b){
print(" ", terminator: "")
} else {
print("*", terminator: "")
}
}
print("", terminator: "\n")
a=a-1;
b=b+1;
}
a=1;
b=2*n;
b-=1
for _ in 0..<n {
for j in 1..<2*n {
if(j>a && j<b){
print(" ", terminator: "")
} else {
print("*", terminator: "")
}
}
print("", terminator: "\n")
a=a+1;
b=b-1;
}
}
printTriangleHole(4)/*
// Question 20 : print ButterFly
* *
** **
*** ***
********
*** ***
** **
* *
---------------
*/
func printButterFly(_ n: Int) {
for i in 1...2*n {
for j in 1...2*n {
if(i<=n){
if((j<=i)||(j>2*n-i)){
print("*", terminator: "")
}else{
print(" ", terminator: "")
}
}
else if(i>n){
if((j <= 2*n - i) || j > i ){
print("*", terminator: "")
} else{
print(" ", terminator: "")
}
}
}
print("", terminator: "\n")// Helps for printing new line
}
}
printButterFly(4)/*
// Question 21 : print Square with Hole
****
* *
* *
****
---------------
*/
func printSquaresWithHole(_ n: Int) {
for i in 1...n {
for j in 1...n {
if (i==1 || i==n || j==1 || j==n) {
print("*", terminator: "")
} else {
print(" ", terminator: "")
}
}
print("", terminator: "\n")// Helps for printing new line
}
}
printSquaresWithHole(4)/*
// Question 22 : print Square with decreasing values
4 4 4 4 4 4 4
4 3 3 3 3 3 4
4 3 2 2 2 3 4
4 3 2 1 2 3 4
4 3 2 2 2 3 4
4 3 3 3 3 3 4
4 4 4 4 4 4 4
---------------
*/
func printSquaresWithNumbers(_ n: Int) {
for i in 1..<2*n {
for j in 1..<2*n {
// cout << max(abs(n-i) + 1,abs(n-j) + 1) << " ";
print(max(abs(n-i) + 1,abs(n-j) + 1), terminator: " ")
}
print("", terminator: "\n")// Helps for printing new line
}
}
printSquaresWithNumbers(4)