Create 33.1 String Find Nth Occurence.java

Author: prokrishpatel

33.1 String Find Nth Occurence.java

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+/*
+Chacha Chaudhary has asked Sheena to find out the Nth occurence of any Word in the Paragraph. Sheena finds it a tedious task to find Nth occurence so she wants you to write a small java program which can solve her problem and she will give you a gift for helping her. Let us write a code.
+
+Input Format
+
+First line reads the paragraph contents
+
+Second line reads the word to be found and N separated by Space
+
+Constraints
+
+N>0
+
+Output Format
+
+Prints the starting index of the Nth occurence of the word in the paragraph
+
+Prints Not Present if not occuring even a single time and prints the last occurence if occuring less than N times.
+
+Sample Input 0
+
+Aana bought banana.
+ana 1
+Sample Output 0
+
+1
+Sample Input 1
+
+Aana bought banana
+baa 3
+Sample Output 1
+
+Not Present
+Sample Input 2
+
+Aana bought banana.
+ba 3
+Sample Output 2
+
+12
+Explanation 2
+
+ba is occuring only 1 time i.e. at index 12. 3rd occurence is not available so output is 12 which is the last occurence.
+*/
+
+
+import java.io.*;
+import java.util.*;
+
+public class Solution {
+
+    public static void main(String[] args) {
+        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
+        Scanner sc = new Scanner(System.in);
+        String para = sc.nextLine();
+        String tofind = sc.next();
+        int occurence = sc.nextInt();
+        int index = para.indexOf(tofind);
+        int final_= index;
+        int count = 1;
+        while(index!=-1&&count++<occurence)
+        {
+            index = para.indexOf(tofind,(index+1));
+            if(index!=-1)
+                final_ = index;
+        }
+        if(final_==-1)
+            System.out.println("Not Present");
+        else
+            System.out.println(final_);
+        
+            
+    }
+}