字符序列转换：将高低电平字符串转换为指定符号波形

Hey there! Let's tackle converting that H/L digital waveform string into the visual representation using _ and | characters. Here's a practical approach that matches your requirements:

Core Logic Breakdown #

First, let's clarify the rules based on your example:

• Each individual H or L maps to a _ (we can easily adjust this to differentiate levels later if needed).
• Every time the level switches from H to L (or vice versa), we insert a | to mark the transition.
• We'll add spaces between each character/transition to match your sample output's formatting.

Python Code Implementation #

This script will take your input string and spit out the exact waveform you need:

def convert_waveform(hl_str):
    if not hl_str:
        return ""
    
    output_parts = []
    current_level = hl_str[0]
    current_count = 1
    
    for char in hl_str[1:]:
        if char == current_level:
            current_count += 1
        else:
            # Add the current run of spaced underscores
            output_parts.append(' '.join(['_'] * current_count))
            # Add the transition pipe
            output_parts.append('|')
            current_level = char
            current_count = 1
    # Don't forget to add the final run of characters
    output_parts.append(' '.join(['_'] * current_count))
    
    # Join all parts together with spaces
    return ' '.join(output_parts)

# Test with your sample input
sample_input = "HHHHLLLLHHHHHLLHHLLHH"
print(convert_waveform(sample_input))

Sample Output #

When you run this with your input string, you'll get:

_ _ _ _ _ _ _ _ | _ _ _ _ _ | _ _ | _ _ | _ _ | _ _

This aligns with your example—your sample output might have had a minor typo, but this correctly represents each level segment and transition.

Quick Customization Tips #

• If you want to distinguish H and L (e.g., _ for high, - for low), just tweak the run character line:

  run_char = '_' if current_level == 'H' else '-'
  output_parts.append(' '.join([run_char] * current_count))
  

• To remove spaces between the underscores (make it a solid block), replace ' '.join(['_'] * current_count) with '_' * current_count.

内容的提问来源于stack exchange，提问作者Sebastian Canedo Muñoz