Insertion Sort [JavaScript]

Insertion sort is a straightforward comparison-based sorting algorithm that builds the final sorted list one item at a time. It divides the input list into a sorted portion (initially containing just the first element) and an unsorted portion. The algorithm repeatedly picks the first element from the unsorted portion and inserts it into its correct position within the sorted portion. This process involves shifting elements in the sorted portion to make space for the newly inserted element, effectively growing the sorted portion by one element with each iteration. Insertion sort has a time complexity of \(O(n^2)\) because, in the worst case, each element might need to be compared with every other element before it in the list. While it is inefficient for large datasets, insertion sort performs well for small lists or nearly sorted data due to its simplicity and stability. Additionally, it is often used in hybrid algorithms to handle small subarrays efficiently.

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Видео Insertion Sort [JavaScript] канала Adam Djellouli