#### Implement a stack with a max function

Implement a stack with a max function that returns the maximum value in the stack.

#### Problem

```Implement a stack with a max function that returns the maximum value in the stack.
Example input:
push(1)
push(2)
push(3)
max()
Example output:
3```

#### Solution

This solution is in JavaScript. Our A.I. can create solutions in multiple languages.
```// Solution:
// The solution below is optimal because it uses a stack to store the values and a variable to store the max value.
// The max value is updated every time a new value is pushed to the stack.
// The max function returns the max value.

class Stack {
constructor() {
this.stack = [];
this.max = null;
}

push(value) {
this.stack.push(value);
if (this.max === null || value > this.max) {
this.max = value;
}
}

pop() {
const value = this.stack.pop();
if (value === this.max) {
this.max = Math.max(...this.stack);
}
return value;
}

max() {
return this.max;
}
}```

A.I. Evaluation of the Solution

The candidate's solution is correct and uses a stack to store the values and a variable to store the max value. The max value is updated every time a new value is pushed to the stack. The max function returns the max value.

Evaluated at: 2022-11-22 18:15:29