用Java语言的for循环写出10种99乘法表的不同输出样式

1. 普通乘法表输出样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        System.out.print(j + " * " + i + " = " + (i * j) + "  ");
    }
    System.out.println();
}

2. 带对齐的乘法表输出样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        System.out.printf("%d * %d = %-2d  ", j, i, (i * j));
    }
    System.out.println();
}

3. 倒序输出乘法表样式：

for (int i = 9; i >= 1; i--) {
    for (int j = 1; j <= i; j++) {
        System.out.print(j + " * " + i + " = " + (i * j) + "  ");
    }
    System.out.println();
}

4. 纵向输出乘法表样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= 9; j++) {
        if (j < i) {
            System.out.print("        ");
        } else {
            System.out.printf("%d * %d = %-2d  ", i, j, (i * j));
        }
    }
    System.out.println();
}

5. 左对齐输出乘法表样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        System.out.printf("%-2d * %-2d = %-3d", j, i, (i * j));
    }
    System.out.println();
}

6. 带边框的乘法表样式：

System.out.println("+------------------------------------------------------+");
for (int i = 1; i <= 9; i++) {
    System.out.print("| ");
    for (int j = 1; j <= i; j++) {
        System.out.printf("%d * %d = %-2d  ", j, i, (i * j));
    }
    for (int j = i + 1; j <= 9; j++) {
        System.out.print("           ");
    }
    System.out.println(" |");
}
System.out.println("+------------------------------------------------------+");

7. 带颜色的乘法表样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        int result = i * j;
        if (result < 10) {
            System.out.printf("\u001B[31m%d * %d = %d  \u001B[0m", j, i, result);
        } else if (result >= 10 && result < 50) {
            System.out.printf("\u001B[32m%d * %d = %d  \u001B[0m", j, i, result);
        } else {
            System.out.printf("\u001B[34m%d * %d = %d  \u001B[0m", j, i, result);
        }
    }
    System.out.println();
}

8. 带空格的乘法表样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        int result = i * j;
        String space = " ";
        if (result < 10) {
            space += "  ";
        } else if (result >= 10 && result < 100) {
            space += " ";
        }
        System.out.printf("%d * %d = %d%s", j, i, result, space);
    }
    System.out.println();
}

9. 带斜线的乘法表样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        System.out.printf("%d\\%d=%-2d  ", j, i, (i * j));
    }
    System.out.println();
}

10. 带加号的乘法表样式：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        System.out.printf("%d + %d = %-2d  ", j, i, (i + j));
    }
    System.out.println();
}