本文介绍了由长字符串排序的ArrayList的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我要订购由长度字符串的ArrayList,而不仅仅是数字顺序。
比方说,列表中包含了这些话:
黄瓜
aeronomical
培根
茶
伸缩式
fantasmagorical
他们需要得到他们的长度差责令其特殊字符串,例如:
智能
所以,最后的名单看起来像这样(括号中的差异):
aeronomical(0)
伸缩(1)
fantasmagorical(3) - 正分歧优先?其实并不重要
黄瓜(3)
熏肉(6)
茶(8)
解决方案
使用自定义的比较:
公共类MyComparator实现了java.util.Comparator<串GT; { 私人诠释referenceLength; 公共MyComparator(String引用){
超();
this.referenceLength = reference.length();
} 公众诠释比较(字符串S1,S2的字符串){
INT DIST1 = Math.abs(s1.length() - referenceLength);
INT dist2 = Math.abs(s2.length() - referenceLength); 返回DIST1 - dist2;
}
}
然后使用排序列表 java.util.Collections.sort(列表,比较器)
。
I want to order an ArrayList of strings by length, but not just in numeric order.
Say for example, the list contains these words:
cucumber
aeronomical
bacon
tea
telescopic
fantasmagorical
They need to be ordered by their difference in length to a special string, for example:
intelligent
So the final list would look like this (difference in brackets):
aeronomical (0)
telescopic (1)
fantasmagorical (3) - give priority to positive differences? doesn't really matter
cucumber (3)
bacon (6)
tea (8)
解决方案
Use a custom comparator:
public class MyComparator implements java.util.Comparator<String> {
private int referenceLength;
public MyComparator(String reference) {
super();
this.referenceLength = reference.length();
}
public int compare(String s1, String s2) {
int dist1 = Math.abs(s1.length() - referenceLength);
int dist2 = Math.abs(s2.length() - referenceLength);
return dist1 - dist2;
}
}
Then sort the list using java.util.Collections.sort(List, Comparator)
.
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