Butterfly Pattern

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LanguageJava
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class Main { public static void main(String[] args) { int n = 3; // half height // Upper part for (int i = 1; i <= n; i++) { // left stars for (int j = 1; j <= i; j++) { System.out.print("*"); } // spaces for (int j = 1; j <= 2*(n - i); j++) { System.out.print(" "); } // right stars for (int j = 1; j <= i; j++) { System.out.print("*"); } System.out.println(); } // Lower part for (int i = n - 1; i >= 1; i--) { // left stars for (int j = 1; j <= i; j++) { System.out.print("*"); } // spaces for (int j = 1; j <= 2*(n - i); j++) { System.out.print(" "); } // right stars for (int j = 1; j <= i; j++) { System.out.print("*"); } System.out.println(); } } }
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