Step 1: Understand what binary search is. It is a method to find an item in a list by repeatedly dividing the search interval in half.
Step 2: Know that binary search requires the list (or array) to be sorted. This means the items must be in a specific order, like from smallest to largest.
Step 3: If the list is sorted, you can apply binary search. If it is not sorted, binary search cannot be used.
Step 4: When using binary search, you start by looking at the middle item of the sorted list.
Step 5: If the middle item is the one you are looking for, you are done. If not, you check if the item is smaller or larger than the middle item.
Step 6: Based on the comparison, you eliminate half of the list and repeat the process on the remaining half until you find the item or determine it is not in the list.
