在此程序中,您将学习如何在Java中创建金字塔,半金字塔,倒金字塔,Pascal三角形和Floyd三角形的指定语句。
源代码列表 |
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使用*,数字和字符打印三角形的代码 |
使用*和数字打印倒三角形的代码 |
打印完整金字塔的代码 |
打印帕斯卡三角形的代码 |
打印弗洛伊德三角形的代码 |
* * * * * * * * * * * * * * *
源代码
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
源代码
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
源代码
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(); } } }
* * * * * * * * * * * * * * *
源代码
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
源代码
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(); } } }
* * * * * * * * * * * * * * * * * * * * * * * * *
源代码
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
源代码
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(); } } }
* * * * * * * * * * * * * * * * * * * * * * * * *
源代码
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
源代码
public class Pattern { public static void main(String[] args) { int rows = 6, coef = 1; for(int i = 0; i < rows; i++) { 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(); } } }
1 2 3 4 5 6 7 8 9 10
源代码
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(); } } }