coinFlip heads streak输出异常：无法获取100次抛币最长连续正面次数

Got it, let's fix this together! The problem with just counting total heads is that we're not tracking streaks as they unfold—we need two key pieces of data at every step: the length of the current heads streak, and the longest streak we've seen so far.

Here's the step-by-step approach: #

• Start with three variables: longest_streak (to store the record), current_streak (to track the ongoing heads run), and total_heads (if you still want to keep count of total heads). Initialize all to 0.
• For each of the 100 flips:
  • If the flip is heads: increment both total_heads and current_streak, then check if current_streak is longer than longest_streak—if yes, update longest_streak.
  • If the flip is tails: reset current_streak to 0 (since the streak is broken).
• After all flips, output the results.

Python Code Example #

import random

def track_longest_heads_streak(num_flips=100):
    longest_streak = 0
    current_streak = 0
    total_heads = 0

    for _ in range(num_flips):
        # Simulate a coin flip: 1 = heads, 0 = tails (you can use strings too)
        flip = random.randint(0, 1)
        
        if flip == 1:
            total_heads += 1
            current_streak += 1
            # Update the longest streak if current is longer
            if current_streak > longest_streak:
                longest_streak = current_streak
        else:
            # Tails breaks the streak—reset current count
            current_streak = 0
    
    print(f"Total heads flipped: {total_heads}")
    print(f"Longest consecutive heads streak: {longest_streak}")

# Run the simulation
track_longest_heads_streak()

Key Notes #

• The critical part is resetting current_streak to 0 whenever we hit tails—this ensures we only count unbroken runs of heads.
• We update longest_streak every time we get a heads because the streak could keep growing (e.g., if we get 5 heads in a row, we need to update the longest streak at each step from 1 to 5, not just at the end of the streak).
• If you prefer using strings like 'heads' and 'tails' instead of numbers, just replace random.randint(0,1) with random.choice(['heads', 'tails']) and adjust the condition to if flip == 'heads':.

内容的提问来源于stack exchange，提问作者Mohamed Al Sabbagh