Java Programming: Lesson 40 - Insertion Sort смотреть онлайн

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In the previous lesson (https://youtu.be/jLAw4w5Va7s), we introduced a sorting algorithm. This lesson explores another way that Java can sort elements of an array or ArrayList. Remember that this applies to all sortable elements (not just ints and doubles)

Insertion sort is a different approach for sorting a collection of elements, whether it be an array or ArrayList. Any object can be sorted as long as the class defines compareTo( ), but sorting is more obvious for ints (numerical) and Strings (alphabetical). Insertion sort might be slightly harder to code than bubble sort, but it is more efficient for Java (better time complexity). We can insertion-sort an array or ArrayList of ints, doubles, chars, or booleans. Or Strings, according to the compareTo( ) method in the String class which would compare two Strings alphabetically. Or objects, as long as they implement the Comparable interface and define a compareTo( ) method.

1:11 Review of Sortable Objects
4:21 Review of Bubble Sort
5:28 NEW: Intro to Insertion Sort
8:08 NEW: Insertion Sort Algorithm in Java
12:25 NEW: Testing Insertion Sort
14:39 NEW: Insertion Sort with Strings

An equivalent Python lesson is available here: https://youtu.be/NtD4ER_Zag8 (insertion sort in Python)

Ready for selection sort? Try ANOTHER sorting algorithm here: https://youtu.be/e2euBI0-fhk

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