Question

java编程用循环语句,输出下图形 # ### ##### ####### ####### ##### ### #

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Answer 1

int num = 10;
for (int i = 1; i < num; i++) { for (int j = num; j > i; j--) { System.out.print(" "); } for (int j = 0; j < i; j++) { System.out.print("*"); } for (int j = 1; j < i; j++) { System.out.print("*"); } for (int j = num; j > i; j--) { System.out.print(" "); } System.out.println(); }for (int i = 2; i < num; i++) { for (int j = 0; j <i; j++) { System.out.print(" "); } for (int j = i; j <num; j++) { System.out.print("*"); } for (int j = i+1; j <num; j++) { System.out.print("*"); } for (int j = 0; j<i; j++) { System.out.print(" "); } System.out.println(); }