Docs With odd page (IPA-35)

Author: Arijit-SE

IPA30/DocsWithOddPages.txt

@@ -0,0 +1,65 @@
+Create class Document with below attributes
+
+id - int
+title - String
+folderName - String
+pages - int
+
+Write getters, setters and parameterized constructor as required. 
+
+Create class Solution with main method. 
+
+Implement static method - docsWithOddPages in Solution class.
+
+This method will take array of Document objects and return another array with Document objects which has odd number of pages. 
+
+This method should be called from main method and display values of returned objects as shared in the sample (in ascending 
+order of id attribute). 
+
+Before calling this method, use Scanner object to read values for four Document objects referring attributes in the above 
+sequence. 
+
+Next call the method and display the result. 
+
+Consider below sample input and output:
+
+Input:
+1
+resume
+personal
+50
+2
+question1
+exams
+55
+3
+question2
+exams
+45
+4
+India
+misc
+40
+
+
+Output (each line has values separated by single space):
+2 question1 exams 55
+3 question2 exams 45
+
+
+
+Note on using Scanner object:
+Sometimes scanner does not read the new line character while invoking methods like nextInt(), nextDouble() etc. 
+Usually, this is not an issue, but this may be visible while calling nextLine() immediately after those methods.
+
+Consider below input values:
+22
+hello
+
+Referring below code:
+
+Scanner sc = new Scanner(System.in);
+int x = sc.nextInt();
+String str = sc.nextLine(); -> here we expect str to have value hello. Instead it may be """".
+
+If above issue is observed, then it is suggested to add one more explicit call to nextLine() after reading numeric value.

IPA30/DocsWithOddPagesByAssId.java

@@ -0,0 +1,116 @@
+
+import java.io.*;
+import java.util.*;
+import java.text.*;
+import java.math.*;
+import java.util.regex.*;
+
+public class DocsWithOddPagesByAssId {
+    public static void main(String args[] ) throws Exception {
+        /* Enter your code here. Read input from STDIN. Print output to STDOUT */
+        Scanner sc = new Scanner(System.in);
+        Document[] doc = new Document[4];
+        for(int i =0; i<4; i++)
+        {
+            int a = sc.nextInt();sc.nextLine();
+            String b = sc.nextLine();
+            String c = sc.nextLine();
+            int d = sc.nextInt();
+            
+            doc[i] = new Document(a,b,c,d);
+        }
+        Document[] d = docWithOddPages(doc);
+        if(d==null)
+        {
+            System.out.println("All pages are even");
+        }
+        else
+        {
+            for(int  i =0; i<d.length; i++)
+            {
+                System.out.println(d[i].getId()+" "+d[i].getTitle()+" "+d[i].getFolderName()+" "+d[i].getPages());
+            }
+        }
+        
+    }
+    public static Document[] docWithOddPages(Document[] d)
+    {
+        Document[] st = new Document[0];
+        for(int i=0; i<d.length; i++)
+        {
+            if(d[i].pages%2!=0)
+            {
+                st = Arrays.copyOf(st,st.length+1);
+                st[st.length-1]=d[i];
+            }
+        }
+        for(int i =0; i<st.length; i++)
+        {
+            for(int j=i+1; j<st.length; j++)
+            {
+                if(st[i].getId()>st[j].getId())
+                {
+                    Document k=st[i];
+                    st[i]=st[j];
+                    st[j]=k;
+                }
+            }
+        }
+        if(st.length>0)
+        {
+            return st;
+        }
+        else
+        {
+            return null;
+        }
+    }
+}
+class Document
+{
+    int id; 
+    String title; 
+    String folderName; 
+    int pages;
+    
+    public Document(int id, String title, String folderName, int pages)
+    {
+        this.id = id;
+        this.title = title;
+        this.folderName = folderName;
+        this.pages = pages;
+    }
+    
+    public int getId()
+    {
+        return id;
+    }
+    public void setId(int id)
+    {
+        this.id = id;
+    }
+    public String getTitle()
+    {
+        return title;
+    }
+    public void setTitle(String title)
+    {
+        this.title = title;
+    }
+    public String getFolderName()
+    {
+        return folderName;
+    }
+    public void setFolderName(String folderName)
+    {
+        this.folderName = folderName;
+    }
+    public int getPages()
+    {
+        return pages;
+    }
+    public void setPages(int pages)
+    {
+        this.pages = pages;
+    }
+}