Question

one of the streets in your city has a total of l street lights. Each light i covers the street from Xi to yi distance. Find the length of street covered with light
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Answer 1

Answer:

import java.util.Scanner;

class main

{

   public static void main(String args[])

   {

       int [][] myarray = {{1,4},{7,10},{11,13},{16,17},{17,18}};

       int sum=0,diff=0;

       for(int i =0;i<myarray.length;i++){

           sum = sum +(myarray[i][1]-myarray[i][0]);

           if(i<myarray.length-1){

               if(myarray[i][1] > myarray[i+1][0] || (myarray[i][1] - myarray[i+1][0]) == -1){

                   diff = diff +(myarray[i][1] - myarray[i+1][0]);

               }

           }

       }

       System.out.println(sum-diff);

   }

}

Explanation: