Add OOP/Java/Assignments/FISAC/Q2.java

OOP/Java/Assignments/FISAC/Q2.java

@@ -0,0 +1,123 @@
+import java.text.*;
+import java.util.*;
+
+interface F {
+    void srt(int n);
+    void srt_d(String d);
+}
+
+class InvEx extends Exception {
+    public InvEx(String m) {
+        super(m);
+    }
+}
+
+class S implements Comparable<S> {
+    String n;
+    int r;
+    String reg;
+    String br;
+
+    public S(String n, int r, String br) {
+        this.n = n;
+        this.r = r;
+        this.br = br;
+    }
+
+    @Override
+    public int compareTo(S o) {
+        return Integer.compare(this.r, o.r);
+    }
+
+    @Override
+    public String toString() {
+        return "S{n='" + n + "', r=" + r + ", reg='" + reg + "', br='" + br + "'}";
+    }
+}
+
+class Fcl implements Comparable<Fcl> {
+    String n;
+    String d;
+    String dept;
+    String emp;
+
+    public Fcl(String n, String d, String dept) throws InvEx {
+        if (!d.matches("\\d{2}-[a-zA-Z]{3}-\\d{4}") && !d.matches("\\d{2}-\\d{2}-\\d{4}")) {
+            throw new InvEx("Invalid date format");
+        }
+        this.n = n;
+        this.d = d;
+        this.dept = dept;
+    }
+
+    @Override
+    public int compareTo(Fcl o) {
+        try {
+            SimpleDateFormat f = new SimpleDateFormat("dd-MM-yyyy");
+            return f.parse(this.d).compareTo(f.parse(o.d));
+        } catch (ParseException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "Fcl{n='" + n + "', d='" + d + "', dept='" + dept + "', emp='" + emp + "'}";
+    }
+}
+
+public class M implements F {
+    List<S> sts = new ArrayList<>();
+    List<Fcl> fcls = new ArrayList<>();
+
+    public static void main(String[] a) {
+        M m = new M();
+
+        m.sts.add(new S("A", 2, "CCE"));
+        m.sts.add(new S("B", 1, "IT"));
+        m.sts.add(new S("C", 3, "CCE"));
+
+        try {
+            m.fcls.add(new Fcl("S", "15-Mar-2002", "ICT"));
+            m.fcls.add(new Fcl("J", "20-03-2002", "ECE"));
+            m.fcls.add(new Fcl("J2", "10-Feb-2002", "ICT"));
+        } catch (InvEx e) {
+            System.out.println(e.getMessage());
+        }
+
+        m.srt(0);
+        m.srt_d("");
+
+        for (S s : m.sts) {
+            System.out.println(s);
+        }
+
+        for (Fcl f : m.fcls) {
+            System.out.println(f);
+        }
+    }
+
+    @Override
+    public void srt(int n) {
+        Collections.sort(sts);
+        Map<String, Integer> brCnt = new HashMap<>();
+
+        for (S s : sts) {
+            brCnt.putIfAbsent(s.br, 1);
+            s.reg = "2022" + s.br + String.format("%03d", brCnt.get(s.br));
+            brCnt.put(s.br, brCnt.get(s.br) + 1);
+        }
+    }
+
+    @Override
+    public void srt_d(String d) {
+        Collections.sort(fcls);
+        Map<String, Integer> deptCnt = new HashMap<>();
+
+        for (Fcl f : fcls) {
+            deptCnt.putIfAbsent(f.dept, 1);
+            f.emp = "MAHE" + f.dept + String.format("%03d", deptCnt.get(f.dept));
+            deptCnt.put(f.dept, deptCnt.get(f.dept) + 1);
+        }
+    }
+}