如何将指定的单词末尾字母与句子中的不同字母进行匹配和替换

def replace_letter(word, sentence):
    last_letter = word[-1]
    replaced_sentence = ""
    for letter in sentence:
        if letter != last_letter:
            replaced_sentence += letter
        else:
            replaced_sentence += "replacement"  # 替换为指定的内容
    return replaced_sentence

word = "example"
sentence = "This is an example sentence."
replaced_sentence = replace_letter(word, sentence)
print(replaced_sentence)

function replaceLetter(word, sentence) {
    var lastLetter = word[word.length - 1];
    var replacedSentence = "";
    for (var i = 0; i < sentence.length; i++) {
        if (sentence[i] !== lastLetter) {
            replacedSentence += sentence[i];
        } else {
            replacedSentence += "replacement";  // 替换为指定的内容
        }
    }
    return replacedSentence;
}

var word = "example";
var sentence = "This is an example sentence.";
var replacedSentence = replaceLetter(word, sentence);
console.log(replacedSentence);