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Java Program to print the diamond shape
A diamond shape can be printed by printing a triangle and then an inverted triangle. An example of this is given as follows −
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
A program that demonstrates this is given as follows.
Example
public class Example {
public static void main(String[] args) {
int n = 6;
int s = n - 1;
System.out.print("A diamond with " + 2*n + " rows is as follows:
");
for (int i = 0; i < n; i++) {
for (int j = 0; j < s; j++)
System.out.print(" ");
for (int j = 0; j <= i; j++)
System.out.print("* ");
System.out.print("
");
s--;
}
s = 0;
for (int i = n; i > 0; i--) {
for (int j = 0; j < s; j++)
System.out.print(" ");
for (int j = 0; j < i; j++)
System.out.print("* ");
System.out.print("
");
s++;
}
}
}Output
A diamond with 12 rows is as follows: * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Now let us understand the above program.
The diamond shape is created by printing a triangle and then an inverted triangle. This is done by using nested for loops. The code snippet for the upper triangle is given as follows.
int n = 6;
int s = n - 1;
System.out.print("A diamond with " + 2*n + " rows is as follows:
");
for (int i = 0; i < n; i++) {
for (int j = 0; j < s; j++)
System.out.print(" ");
for (int j = 0; j <= i; j++)
System.out.print("* ");
System.out.print("
");
s--;
}The code snippet for the inverted lower triangle is given as follows.
s = 0;
for (int i = n; i > 0; i--) {
for (int j = 0; j < s; j++)
System.out.print(" ");
for (int j = 0; j < i; j++)
System.out.print("* ");
System.out.print("
");
s++;
}
Updated on: 25-Jun-2020
140 Views
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