输入任意两个字符串,根据公式来计算两个字符串的Jaccard相似度。Jaccard相似度的公式为:
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;
public class StrJaccard {
public static void main(String[] args) {
System.out.println("请输入两个字符串");
Scanner sc = new Scanner(System.in);
String str1 = sc.nextLine();
String str2 = sc.nextLine();
Set<Character> s1 = new HashSet<>();//set元素不可重复
Set<Character> s2 = new HashSet<>();
for (int i = 0; i < str1.length(); i++) {
s1.add(str1.charAt(i