I recently went through Binary Search Templates \n\n[https://leetcode.com/explore/learn/card/binary-search/](http://)\n\nBut I was not able to understand when to use - \n\n1. ```while(left < right )```\n2. ```while(left <=right )```\n\nUsing Method 1 -\n\n1. Search Condition needs to access element\'s immediate right neighbor\n2. Use element\'s right neighbor to determine if condition is met and decide whether to go left or right\n3. Post-processing required. Loop/Recursion ends when you have 1 element left. Need to assess if the remaining element meets the condition.\n\n\nCan you explain this with some examples ?\n

I recently went through Binary Search Templates \n\nhttps://leetcode.com/explore/learn/card/binary-search/\n\nBut I was not able to understand when to use - \n\