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Author: AvinandanBose

SortedMap10.java

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+import java.util.Comparator;
+import java.util.SortedMap;
+import java.util.TreeMap;
+ class SortedMap10 {
+    int a;
+    int b; 
+    public SortedMap10(int a, int b) {
+        this.a = a;
+        this.b = b;
+    }
+    public String toString() {
+        return "a:" + a + " b:" + b;
+    }
+    
+        
+    
+
+    public static void main(String[] args) throws Exception {
+        SortedMap<SortedMap10, Integer> map = new TreeMap<>(Comparator.comparingInt(o -> o.a));
+        map.put(new SortedMap10(1, 2), 1);
+        map.put(new SortedMap10(2, 3), 2);
+        map.put(new SortedMap10(3, 4), 3);
+        map.put(new SortedMap10(4, 5), 4);
+        map.put(new SortedMap10(5, 6), 5);
+        map.put(new SortedMap10(6, 7), 6);
+        System.out.println("Map:" + map);
+        
+    }
+}
+    
+

SortedMap11.java

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+ import java.util.Comparator;
+import java.util.SortedMap;
+import java.util.TreeMap;
+ class SortedMap11 {
+     int a;
+     int b;
+
+     public SortedMap11(int a, int b) {
+        this.a = a;
+        this.b = b;
+    }
+
+     public String toString() {
+         return "a:" + a + " b:" + b;
+     }
+
+    
+}
+
+class srtMp implements Comparator<SortedMap11> {
+
+    @Override
+    public int compare(SortedMap11 o1, SortedMap11 o2) {
+        return o1.a - o2.a;
+    }
+    
+}
+
+class Main{
+    public static void main(String[] args) throws Exception {
+        SortedMap<SortedMap11, Integer> map = new TreeMap<>(new srtMp());
+        map.put(new SortedMap11(1, 2), 1);
+        map.put(new SortedMap11(2, 3), 2);
+        map.put(new SortedMap11(3, 4), 3);
+        map.put(new SortedMap11(4, 5), 4);
+        map.put(new SortedMap11(5, 6), 5);
+        map.put(new SortedMap11(6, 7), 6);
+        System.out.println("Map:" + map);
+        
+    }
+}

SortedMap8.java

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+import java.util.SortedMap;
+import java.util.TreeMap;
+public class SortedMap8 {
+    public static void main(String[] args) throws Exception {
+        // headMap
+        SortedMap<String, Integer> map = new TreeMap<>((a,b) -> b.compareTo(a));
+        map.put("a", 1);
+        map.put("b", 2);
+        map.put("c", 3);
+        map.put("d", 4);
+        map.put("e", 5);
+
+        System.out.println("Map:" + map);
+        
+    }
+    
+}

SortedMap9.java

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+ import java.util.Comparator;
+import java.util.SortedMap;
+import java.util.TreeMap;
+public class SortedMap9 {
+
+    public static void main(String[] args) throws Exception {
+        SortedMap<String, Integer> map = new TreeMap<>(Comparator.reverseOrder());
+        map.put("a", 1);
+        map.put("b", 2);
+        map.put("c", 3);
+        map.put("d", 4);
+        map.put("e", 5);
+        map.put("f", 6);
+        System.out.println("Map:" + map);
+
+        SortedMap<Integer, Integer> map2 = new TreeMap<>(Comparator.comparingInt(o -> o));
+        map2.put(1, 1);
+        map2.put(2, 2);
+        map2.put(3, 3);
+        map2.put(4, 4);
+
+        System.out.println("Map2:" + map2);
+        
+    }
+    
+}