blob: 9715d94bc7428c95951d1d25f7c9c7dd3f2f0761 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
public class Ch1 {
public static void main(String[] args) {
try {
System.out.println(sort_string("and2 Raku3 cousins5 Perl1 are4"));
System.out.println(sort_string("guest6 Python1 most4 the3 popular5 is2 " +
"language7"));
System.out.println(sort_string("Challenge3 The1 Weekly2"));
} catch (Exception e) {
System.err.println(e.getMessage());
}
}
private static String sort_string(String str) throws Exception {
Pattern pattern = Pattern.compile("(\\w+)(\\d+)");
Map<String, Integer> m = new HashMap<>();
for (String s : str.split(" ")) {
Matcher matcher = pattern.matcher(s);
if (matcher.find())
m.put(matcher.group(1), Integer.parseInt(matcher.group(2)));
else
throw new Exception("Wrong format!");
}
return m.entrySet()
.stream()
.sorted(Map.Entry.comparingByValue())
.map(Map.Entry::getKey)
.collect(Collectors.joining(" "));
}
}
|
