当前输出:
atc act cat tac
otsp post pots stop spot tops opts
gdo dog god
atr rat tar art
arpt trap tarp part
grof frog
期望的输出:
arpt part tarp trap
atc act cat tac
atr art rat tar
gdo dog god
grof frog
otsp opts post pots spot stop tops
如何将每行的第一个单词按字母顺序排列?
我打印输出的代码是:
for (int i = 0; i < jumblesOrdered.size(); i++) {
String wordAnswer = jumblesOrdered.get(i);
System.out.println(jumbles.get(i) + " " + dictWordHM.get(wordAnswer));
}
我可以在我的jumbles / jumblesOrdered ArrayList上应用Collection.sort吗?
包含HashMap
for (int i = 0; i < dictionaryOrdered.size(); i++) {
String word = dictionary.get(i);
String sortedWord = dictionaryOrdered.get(i);
if (dictWordHM.get(sortedWord) == null) {
dictWordHM.put(sortedWord, word);
} else {
dictWordHM.put(sortedWord, dictWordHM.get(sortedWord) + " "
+ word);
}
}
for (int i = 0; i < jumblesOrdered.size(); i++) {
String word = jumbles.get(i);
String sortedWord = jumblesOrdered.get(i);
if (jumbleWordHM.get(sortedWord) == null) {
jumbleWordHM.put(sortedWord, word);
} else {
jumbleWordHM.put(sortedWord, jumbleWordHM.get(sortedWord) + " "
+ word);
}
}
答案 0 :(得分:2)
如果你想要一个带有排序键的Map,我不会使用HashMap而是使用TreeMap,其中Map键按照自然顺序为你排序(如果键实现Comparable)或者选择顺序你使用比较器。