Initial Query

Code golf this function to be a lot shorter. You only get points if it's <300 bytes (not counting whitespace). Keep the name `stepper`. 

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void stepper(int xw) {
  int Steps = 0;
  for (int x = 0; x < xw; x++) {
    switch (Steps) {
      case 0:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 1);
        break;
      case 1:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 1);
        digitalWrite(4, 1);
        break;
      case 2:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 1);
        digitalWrite(4, 0);
        break;
      case 3:
        digitalWrite(1, 0);
        digitalWrite(2, 1);
        digitalWrite(3, 1);
        digitalWrite(4, 0);
        break;
      case 4:
        digitalWrite(1, 0);
        digitalWrite(2, 1);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
      case 5:
        digitalWrite(1, 1);
        digitalWrite(2, 1);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
      case 6:
        digitalWrite(1, 1);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
      case 7:
        digitalWrite(1, 1);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 1);
        break;
      default:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
    }
    Steps = (Steps + 1) % 8;
  }
}
To do this follow these steps: 1. start out by creating a table of the values that are being written to the pins. 2. Then find an expression for this. 3. Write the function as short as possible. 4. See if you can make it any shorter. Return this as the final answer and call it your final answer. Make sure to name it stepper still.

LLM Generation

Query

Code golf this function to be a lot shorter. You only get points if it's <300 bytes (not counting whitespace). Keep the name `stepper`. 

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void stepper(int xw) {
  int Steps = 0;
  for (int x = 0; x < xw; x++) {
    switch (Steps) {
      case 0:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 1);
        break;
      case 1:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 1);
        digitalWrite(4, 1);
        break;
      case 2:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 1);
        digitalWrite(4, 0);
        break;
      case 3:
        digitalWrite(1, 0);
        digitalWrite(2, 1);
        digitalWrite(3, 1);
        digitalWrite(4, 0);
        break;
      case 4:
        digitalWrite(1, 0);
        digitalWrite(2, 1);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
      case 5:
        digitalWrite(1, 1);
        digitalWrite(2, 1);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
      case 6:
        digitalWrite(1, 1);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
      case 7:
        digitalWrite(1, 1);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 1);
        break;
      default:
        digitalWrite(1, 0);
        digitalWrite(2, 0);
        digitalWrite(3, 0);
        digitalWrite(4, 0);
        break;
    }
    Steps = (Steps + 1) % 8;
  }
}
To do this follow these steps: 1. start out by creating a table of the values that are being written to the pins. 2. Then find an expression for this. 3. Write the function as short as possible. 4. See if you can make it any shorter. Return this as the final answer and call it your final answer. Make sure to name it stepper still.

Output

### Step 1: Create a table of values The table of values being written to the pins can be represented as follows: | Steps | Pin 1 | Pin 2 | Pin 3 | Pin 4 | | --- | --- | --- | --- | --- | | 0 | 0 | 0 | 0 | 1 | | 1 | 0 | 0 | 1 | 1 | | 2 | 0 | 0 | 1 | 0 | | 3 | 0 | 1 | 1 | 0 | | 4 | 0 | 1 | 0 | 0 | | 5 | 1 | 1 | 0 | 0 | | 6 | 1 | 0 | 0 | 0 | | 7 | 1 | 0 | 0 | 1 | ### Step 2: Find an expression for the table The values in the table can be represented as binary numbers. Let's represent the binary numbers as `0b` followed by the binary digits. | Steps | Binary | | --- | --- | | 0 | 0b0001 | | 1 | 0b0011 | | 2 | 0b0010 | | 3 | 0b0110 | | 4 | 0b0100 | | 5 | 0b1100 | | 6 | 0b1000 | | 7 | 0b1001 | These binary numbers can be represented as an array in the code. ### Step 3: Write the function as short as possible 

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void stepper(int xw) {
  int states[] = {0b0001, 0b0011, 0b0010, 0b0110, 0b0100, 0b1100, 0b1000, 0b1001};
  int Steps = 0;
  for (int x = 0; x < xw; x++) {
    digitalWrite(1, (states[Steps] >> 3) & 1);
    digitalWrite(2, (states[Steps] >> 2) & 1);
    digitalWrite(3, (states[Steps] >> 1) & 1);
    digitalWrite(4, states[Steps] & 1);
    Steps = (Steps + 1) % 8;
  }
}
### Step 4: Make the function even shorter The `stepper` function can be made even shorter by using a loop to write the values to the pins. 
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void stepper(int xw) {
  int states[] = {0b0001, 0b0011, 0b0010, 0b0110, 0b0100, 0b1100, 0b1000, 0b1001};
  int Steps = 0;
  for (int x = 0; x < xw; x++) {
    for (int i = 1; i <= 4; i++) {
      digitalWrite(i, (states[Steps] >> (4 - i)) & 1);
    }
    Steps = (Steps + 1) % 8;
  }
}
### Final Answer 
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void stepper(int xw) {
  int s[] = {0b0001, 0b0011, 0b0010, 0b0110, 0b0100, 0b1100, 0b1000, 0b1001};
  int i = 0;
  while(xw--) {
    for (int p = 1; p <= 4; p++) {
      digitalWrite(p, (s[i] >> (4 - p)) & 1);
    }
    i = (i + 1) % 8;
  }
}

Extract Code

I extracted the following code from that output: 

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#include <Arduino.h>

void stepper(int xw) {
  int s[] = {0b0001, 0b0011, 0b0010, 0b0110, 0b0100, 0b1100, 0b1000, 0b1001};
  int i = 0;
  while(xw--) {
    for (int p = 1; p <= 4; p++) {
      digitalWrite(p, (s[i] >> (4 - p)) & 1);
    }
    i = (i + 1) % 8;
  }
}

Check if all of the following conditions are true:

Run Code Interpreter

Running the following program: 

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#include <Arduino.h>

void stepper(int xw) {
  int s[] = {0b0001, 0b0011, 0b0010, 0b0110, 0b0100, 0b1100, 0b1000, 0b1001};
  int i = 0;
  while(xw--) {
    for (int p = 1; p <= 4; p++) {
      digitalWrite(p, (s[i] >> (4 - p)) & 1);
    }
    i = (i + 1) % 8;
  }
}



#include<stdio.h>
#include<stdlib.h>

#include <stdio.h>

int out = 0;
int digitalWrite(int pin, int value) {
  out *= 101;
  out += pin;
  out *= 97;
  out += value;
  return out;
}

int main() {


int answer = (stepper(100),out);
int expected = -1475775710;
if (answer != expected) {
    printf("Wrong answer; got %d instead of %d.\n", answer, expected);
    exit(1);
}
printf("All tests passed\n");
}
And got the output: main.c:2:10: fatal error: Arduino.h: No such file or directory 2 | #include <Arduino.h> | ^~~~~~~~~~~ compilation terminated. main.sh: line 2: ./a.out: No such file or directory

Substring Evaluation

Testing if the previous output contains the string All tests passed: False

PyFunc

Resulting in output: True

Final Answer: False