替换字符串中值的映射

Question

假设我有一个字符串text=“abc”，我想替换一个值映射，例如：

a->b
b->c
c->a

map.entrySet().forEach(el -> text = text.replaceAll(el.getKey(), el.getValue()))

顺便说一下，字符串也可以是多个字符

Answer 1

我用java Streams提出了这个解决方案。

String text = "abc";
Map<String, String> replaceMap = new HashMap<>();
replaceMap.put("a", "b");
replaceMap.put("b", "c");
replaceMap.put("c", "a");

System.out.println("Text = " + text);

text = Arrays.stream(text.split("")).map(x -> {
    String replacement = replaceMap.get(x);
    if (replacement != null) {
        return x.replace(x, replacement);
    } else {
        return x;
    }
}).collect(Collectors.joining(""));

System.out.println("Processed Text = " + text);

输出

Text = abc
Processed Text = bca