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2022-12-15 23:51:04 +07:00
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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package OOP_codeptit;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Map;
+import java.util.Scanner;
+import java.util.TreeMap;
+
+/**
+ *
+ * @author DuyManh
+ */
+public class ThongKeTuKhacNhauTrongFileVanBan {
+
+    public static void main(String[] args) throws IOException {
+        Scanner sc=new Scanner(new File("VANBAN.in"));
+//        Scanner sc = new Scanner(System.in);
+        sc.nextInt();
+        TreeMap<String, Integer> m = new TreeMap<>();
+//        String re1 = "\\d+";
+//        String re2 = "\\w+";
+        int max = 0;
+        while(sc.hasNextLine()) {
+            String s = sc.nextLine().toLowerCase();
+            if(s.length() == 0) continue;
+
+            String a[] = s.trim().split("[^a-z0-9]");
+            
+            for (String x : a) {
+                
+                if (x.length()>0) {
+                    if (m.containsKey(x)) {
+                        int fre = m.get(x);
+                        m.put(x, fre + 1);
+                        max = Math.max(fre + 1, max);
+                    } else {
+                        m.put(x, 1);
+                        max = Math.max(max, 1);
+                    }
+                }
+            }
+        }
+        while (max > 0) {
+            for (Map.Entry<String, Integer> e : m.entrySet()) {
+                if(e.getValue()==max) System.out.println(e.getKey() + " " + e.getValue());
+            }
+            max--;
+        }
+    }
+}
+//
+//3
+//PTIT duy tri hoc phi on dinh nam 2019 va khong tang trong nam 2020-2021 va 2021-2022!
+//Khi dich benh xuat hien PTIT trich hon 6 ty dong ho tro sinh vien PTIT
+//voi muc ho tro 500000 dong/sinh vien PTIT.