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PatternTwentyOne.java
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PatternTwentyOne.java
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package patterns;
/**
* Print below pattern
* # #
* ## ##
* ### ###
* #### ####
* ##########
* #### ####
* ### ###
* ## ##
* # #
*/
public class PatternTwentyOne {
public static void main(String[] args) {
int n = 9;
printPattern(n);
}
private static void printPattern(int n) {
int firstHalf = n / 2 + 1;
for (int i = 1; i <= firstHalf; i++) {
for (int j = 1; j <= i; j++) {
System.out.print("#");
}
for (int j = 1; j <= 2 * firstHalf - 2 * i; j++) {
System.out.print(" ");
}
for (int j = 1; j <= i; j++) {
System.out.print("#");
}
System.out.println();
}
int secondHalf = n / 2;
for (int i = secondHalf; i >= 1; i--) {
for (int j = 1; j <= i; j++) {
System.out.print("#");
}
for (int j = 1; j <= 2 * secondHalf - 2 * i + 2; j++) {
System.out.print(" ");
}
for (int j = 1; j <= i; j++) {
System.out.print("#");
}
System.out.println();
}
}
}