From 41fffc19a1bb8cfbe8d33dc6e6e5b5405472f02f Mon Sep 17 00:00:00 2001
From: ilotterytea <iltsu@alright.party>
Date: Thu, 17 Oct 2024 22:37:53 +0500
Subject: feat: comparator for sorting the map by values

---
 .../javaextra/comparators/MapValueKeyComparator.java | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 core/src/kz/ilotterytea/javaextra/comparators/MapValueKeyComparator.java

diff --git a/core/src/kz/ilotterytea/javaextra/comparators/MapValueKeyComparator.java b/core/src/kz/ilotterytea/javaextra/comparators/MapValueKeyComparator.java
new file mode 100644
index 0000000..d168cf8
--- /dev/null
+++ b/core/src/kz/ilotterytea/javaextra/comparators/MapValueKeyComparator.java
@@ -0,0 +1,20 @@
+package kz.ilotterytea.javaextra.comparators;
+
+import java.util.Comparator;
+import java.util.Map;
+
+
+// Cv pasted from https://stackoverflow.com/a/53081966
+public class MapValueKeyComparator<K extends Comparable<? super K>, V extends Comparable<? super V>>
+        implements Comparator<Map.Entry<K, V>> {
+
+    public int compare(Map.Entry<K, V> a, Map.Entry<K, V> b) {
+        int cmp1 = b.getValue().compareTo(a.getValue()); //can reverse a and b position for ascending/descending ordering
+        if (cmp1 != 0) {
+            return cmp1;
+        } else {
+            return a.getKey().compareTo(b.getKey()); //can reverse a and b position for ascending/descending ordering
+        }
+    }
+
+}
-- 
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