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In this program, you will learn how to create a pyramid, semi-pyramid, inverted pyramid, Pascal triangle, and Floyd triangle in Java using specific statements.
Source code list |
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Use*,print triangle with numbers and characters code |
Use*and code to print inverted triangle with numbers |
Print complete pyramid code |
Print Pascal triangle code |
Print Floyd triangle code |
* * * * * * * * * * * * * * *
Source Code
public class Pattern { public static void main(String[] args) { int rows = 5; for(int i = 1; i <= rows; ++i) { for(int j = 1; j <= i; ++j) { System.out.print("* ); } System.out.println(); } } }
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
Source Code
public class Pattern { public static void main(String[] args) { int rows = 5; for(int i = 1; i <= rows; ++i) { for(int j = 1; j <= i; ++j) { System.out.print(j + " "); } System.out.println(); } } }
A B B C C C D D D D E E E E E
Source Code
public class Pattern { public static void main(String[] args) { char last = 'E', alphabet = 'A'; for(int i = 1; i <= (last-'A'+1); ++i) { for(int j = 1; j <= i; ++j) { System.out.print(alphabet + " "); } ++alphabet; System.out.println(); } } }
* * * * * * * * * * * * * * *
Source Code
public class Pattern { public static void main(String[] args) { int rows = 5; for(int i = rows; i >= 1; --i) { for(int j = 1; j <= i; ++j) { System.out.print("* ); } System.out.println(); } } }
1 2 3 4 5 1 2 3 4 1 2 3 1 2 1
Source Code
public class Pattern { public static void main(String[] args) { int rows = 5; for(int i = rows; i >= 1; --i) { for(int j = 1; j <= i; ++j) { System.out.print(j + " "); } System.out.println(); } } }
* * * * * * * * * * * * * * * * * * * * * * * * *
Source Code
public class Pattern { public static void main(String[] args) { int rows = 5, k = 0; for(int i = 1; i <= rows; ++i, k = 0) { for(int space = 1; space <= rows; - i; ++space) { System.out.print(" "); } while(k != 2 * i; - 1) { System.out.print("* ); ++k; } System.out.println(); } } }
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
Source Code
public class Pattern { public static void main(String[] args) { int rows = 5, k = 0, count = 0, count1 = 0; for(int i = 1; i <= rows; ++i) { for(int space = 1; space <= rows; - i; ++space) { System.out.print(" "); ++count; } while(k != 2 * i; - 1) { if (count <= rows - 1) { System.out.print((i + k) + " "); ++count; } else { ++count1; System.out.print((i + k; - 2 * count1) + " "); } ++k; } count1 = count = k = 0; System.out.println(); } } }
* * * * * * * * * * * * * * * * * * * * * * * * *
Source Code
public class Pattern { public static void main(String[] args) { int rows = 5; for(int i = rows; i >= 1; --i) { for(int space = 1; space <= rows; - i; ++space) { System.out.print(" "); } for(int j = i; j <= 2 * i; - 1; ++j) { System.out.print("* ); } for(int j = 0; j < i; - 1; ++j) { System.out.print("* ); } System.out.println(); } } }
1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1
Source Code
public class Pattern { public static void main(String[] args) { int rows = 6, coef = 1; for(int i = 0; i < rows;++) { for(int space = 1; space < rows - i; ++space) { System.out.print(" "); } for(int j = 0; j <= i; j++) { if (j == 0 || i == 0) coef = 1; else coef = coef * (i - j + 1) / j; System.out.printf("%4d", coef); } System.out.println(); } } }
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Source Code
public class Pattern { public static void main(String[] args) { int rows = 4, number = 1; for(int i = 1; i <= rows; i++) { for(int j = 1; j <= i; j++) { System.out.print(number + " "); ++number; } System.out.println(); } } }