Greedy Algorithms in JAVA

Solved: com.microsoft.sqlserver.jdbc.SQLServerException: The index 1 is out of range.

This error usually comes when we try to insert data in a query where there is no index defined for it. Example :- String strQuery=“select * from location where city_id=? ”; The question mark will be the the first index if we want to insert data so if we call a function like- oPreparedStatement = oConnection.prepareStatement(strQuery); oPreparedStatement.setString(1,235); here we are sending 235 as a first parameter so it will work fine but as soon as we write something after it like oPreparedStatement.setString(2,”kanpur”) then it will throw “The index 2 is out of range” since there is no place to send this value in a query hence it will throw the same error. Here index defines the parameter for which there is no place in the query. To rectify this we need to write query like- String strQuery=“select * from location where city_id=? And city_name=? ”; then it will work fine. The cases in which these errors can occur is- 1)Query is co

Heap implementation in JAVA

In this tutorial we will see all the functionalities of heaps implemented through java language. package com . problems . heap ; public class HeapFunctions { //Function to generate maxheapify where root is max than childs public void maxHeapify ( int Arr [], int i , int N ) { int largest ; int left = 2 * i + 1 ; //left child int right = 2 * i + 2 ; //right child System . out . println ( "left" + " " + left ); System . out . println ( "right" + " " + right ); System . out . println ( "Max size" + " " + N ); if ( left < N && Arr [ left ] > Arr [ i ] ) { largest = left ; System . out . println ( "largest left" + largest ); } else { largest = i ; System . out . println ( "largest i" + largest ); } if ( rig

Concepts of Computer Science

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