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Java/07-Java-Programs/053-Inverted-Pyramid-Pattern.java at main · shaikbasha-dev/Java · GitHub
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07-Java-Programs
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053-Inverted-Pyramid-Pattern.java
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053-Inverted-Pyramid-Pattern.java
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/*
* ============================================================================
* Program Name : Inverted Pyramid Pattern
* File Name : 053-Inverted-Pyramid-Pattern.java
* Class Name : InvertedPyramidPattern
*
* Description:
* This program accepts the number of rows from the user and prints
* an Inverted Pyramid Star Pattern using nested for loops.
*
* Objective:
* - Understand user input using the Scanner class.
* - Learn how to use nested for loops.
* - Print an Inverted Pyramid Star Pattern.
*
* Author : Shaik Mahaboob Basha
* Repository : 01-Core-Java
* Folder : 08-Java-Programs
* ============================================================================
*/
import
java
.
util
.
Scanner
;
public
class
InvertedPyramidPattern
{
// The main() method is the entry point of every Java application.
public
static
void
main
(
String
[]
args
) {
// Create a Scanner object to read input from the keyboard.
Scanner
scanner
=
new
Scanner
(
System
.
in
);
// Ask the user to enter the number of rows.
System
.
out
.
print
(
"Enter the Number of Rows: "
);
// Read the number of rows entered by the user.
int
rows
=
scanner
.
nextInt
();
// Check whether the entered number of rows is valid.
if
(
rows
<=
0
) {
// Display an error message.
System
.
out
.
println
(
"Please enter a positive integer."
);
// Example Output:
// Please enter a positive integer.
}
else
{
// Display the heading.
System
.
out
.
println
(
"Inverted Pyramid Pattern:"
);
// Outer loop controls the number of rows.
for
(
int
i
=
rows
;
i
>=
1
;
i
--) {
// Print the required leading spaces.
for
(
int
j
=
1
;
j
<=
rows
-
i
;
j
++) {
// Print two spaces for proper alignment.
System
.
out
.
print
(
" "
);
}
// Print the stars for the current row.
for
(
int
k
=
1
;
k
<= (
2
*
i
-
1
);
k
++) {
// Print a star followed by a space.
System
.
out
.
print
(
"* "
);
}
// Move to the next line after printing one row.
System
.
out
.
println
();
}
// Example Output:
// Enter the Number of Rows: 5
// Inverted Pyramid Pattern:
// * * * * * * * * *
// * * * * * * *
// * * * * *
// * * *
// *
}
// Close the Scanner object to release system resources.
scanner
.
close
();
}
}
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