Python
```python
for i in range(1, 10):
for j in range(1, i + 1):
print(f"{i} * {j} = {i * j}", end="\t")
print()
```
C语言
```c
include
int main() {
int i, j;
for (i = 1; i <= 9; i++) {
for (j = 1; j <= i; j++) {
printf("%d * %d = %d\t", j, i, i * j);
}
printf("\n");
}
return 0;
}
```
Java
```java
public class Main {
public static void main(String[] args) {
for (int i = 1; i <= 9; i++) {
for (int j = 1; j <= i; j++) {
System.out.printf("%d * %d = %d\t", j, i, i * j);
}
System.out.println();
}
}
}
```
JavaScript
```javascript
for (let i = 1; i <= 9; i++) {
let row = '';
for (let j = 1; j <= i; j++) {
row += `${j} * ${i} = ${i * j}\t`;
}
console.log(row);
}
```
C++
```cpp
include
int main() {
for (int i = 1; i <= 9; i++) {
for (int j = 1; j <= i; j++) {
std::cout<< j << " * "<< i << " = " << i * j << "\t";
}
std::cout << std::endl;
}
return 0;
}
```
Ruby
```ruby
(1..9).each do |i|
(1..i).each do |j|
print "{j} * {i} = {i * j}\t"
end
puts
end
```
这些代码示例分别使用Python、C语言、Java、JavaScript、C++和Ruby编程语言实现了9x9乘法表。每段代码都采用了嵌套循环结构,并通过格式化输出来确保乘法表的对齐和美观。你可以选择任意一种语言进行尝试,根据你的编程习惯和需求选择最适合的方法。