按字母顺序对r中的数据进行分类

def classify_data(r):
    classified_data = {}
    
    for word in r:
        first_letter = word[0].lower()  # 获取首字母并转换为小写
        
        if first_letter in classified_data:
            classified_data[first_letter].append(word)
        else:
            classified_data[first_letter] = [word]
    
    return classified_data

data = ['apple', 'banana', 'cat', 'dog', 'elephant', 'fish', 'grape', 'horse']
result = classify_data(data)

for letter, words in result.items():
    print(f"Words starting with '{letter}': {words}")

Words starting with 'a': ['apple']
Words starting with 'b': ['banana']
Words starting with 'c': ['cat']
Words starting with 'd': ['dog']
Words starting with 'e': ['elephant']
Words starting with 'f': ['fish']
Words starting with 'g': ['grape']
Words starting with 'h': ['horse']