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/**
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* This is my implementation of an insertion sort.
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*
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* I decided to do this when i didn't feel comfortable enough about implementing
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* different types of sorts, so this is my trial and error to try and get myself to implement
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* the various sorts correctly.
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*
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* @author Kody C. Kendall
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*
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*/
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public class InsertionSortInteger {
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/**
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* This method implements insertion sort by integer
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*
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* @param initialArray array to be sorted
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* @return sorted array
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*/
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public int[] insertionIntArraySort(int[] initialArray){
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int[] sortedArray = new int[initialArray.length];
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//Marking first element as sorted.
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sortedArray[0] = initialArray[0];
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//For each element in the initialArray
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for (int index = 1; index < initialArray.length; index++){
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//Finding the last index that was sorted
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int lastSortedIndex = index;
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//Extracting the next element to be compared w/ other sorted elements from initial array
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int extractedElement = initialArray[index];
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//Compare the values of the sorted index to the current extractedElement
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for (lastSortedIndex = index; lastSortedIndex > 0; lastSortedIndex--){
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//If our extracted element is smaller than element to the right, switch them.
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if (sortedArray[lastSortedIndex-1] > extractedElement){
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//move the element to the left of extractedElement to the right in sortedArray
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sortedArray[lastSortedIndex] = sortedArray[lastSortedIndex-1];
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//And move the current extractedElement to the left one (since it's smaller).
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sortedArray[lastSortedIndex-1] = extractedElement;
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}
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else{
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//insert element where it is.
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sortedArray[lastSortedIndex] = extractedElement;
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//Terminating loop since element is in the right spot.
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break;
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}
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}
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}
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return sortedArray;
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}
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}
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