R:遍历句子中的单词，并给出某个单词在句子中的位置

def find_word_position(sentence, target_word):
    words = sentence.split()
    position = []
    for index, word in enumerate(words):
        if word == target_word:
            position.append(index)
    return position

# 示例用法
sentence = "I love programming and programming loves me"
target_word = "programming"
result = find_word_position(sentence, target_word)
print(f"The word '{target_word}' is found at position(s): {result}")

The word 'programming' is found at position(s): [2, 4]