Upgraded Build Script and support now java19/20

.github/workflows/build_action.yml

@@ -11,15 +11,16 @@ jobs:
       strategy:
          fail-fast: false
          matrix:
-            jdk: [8, 11, 14, 16, 17, 18]
+            jdk: [8, 11, 16, 17, 18, 19, 20]
 
       runs-on: ubuntu-latest
       steps:
          - uses: actions/checkout@v2
          
          - name: Set up JDK ${{ matrix.jdk }}
-           uses: actions/setup-java@v1
+           uses: actions/setup-java@v3
            with:
+               distribution: 'temurin'
                java-version: ${{ matrix.jdk }}
 
          - name: Validate Gradle wrapper

src/builder/resources/speiger/assets/collections/templates/utils/Arrays.template

@@ -690,7 +690,7 @@ public class ARRAYS
 	 * @ArrayType(T)
 	 */
 	public static GENERIC_KEY_BRACES void selectionSort(KEY_TYPE[] array, int from, int to) {
-		for (int i = from; i < to; i++) {
+		for (int i = from,m=to-1; i < m; i++) {
 			KEY_TYPE min = array[i];
 			int minId = i;
 			for(int j = i+1; j < to; j++) {