问题描述
我在 java 中有以下哈希图:
I have the following hashmap in java:
{B046=0.0, A061=3.0, A071=0.0, B085=0.0, B075=3.0, B076=9.0, B086=3.0, B095=0.0, B096=0.0, A052=0.0, B066=0.0, B056=9.0, B065=0.0, B055=9.0}
我应该如何对哈希图进行排序，以便考虑字母，然后是数字?
How should I go about sorting the hashmap such that the Alphabet, followed by the numerical figures are taken into account?
生成的哈希图应如下所示:
The resulting hashmap should look like this:
{A052=0.0,A061=3.0,A071=0.0,B046=0.0,B055=9.0,B056=9.0,B065=0.0,B066=0.0,B075=3.0,B076=9.0,B085=0.0,B086=3.0,B095=0.0,B096=0.0}
感谢您的帮助！
推荐答案
使用排序的TreeMap:
Map<String, Float> map = new TreeMap<>(yourMap);
它会自动放置按键排序的条目.我认为自然的 String 排序在你的情况下会很好.
It will automatically put entries sorted by keys. I think natural String ordering will be fine in your case.
请注意，由于查找优化，HashMap 不会保留顺序.
Note that HashMap due to lookup optimizations does not preserve order.
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