数组中提取相同的字母,可以使用string的charat方法遍历字母,放到一个string中,找到之后删除掉这个字母,接着遍历下一个,示例如下:package test1;import java.util.Random;public class ArrayTest {public static void main(String[] args) {//1、构建一个数组String[] array={"a","b","c","d","c","d","e"};//2、将数组中值的遍历成一个StringString str="";for(int i=0;i set = new HashSet();
for(String s : list)
//遍历list
...
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