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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Loops-Wrong-ranges/Java/loops-wrong-ranges.java Normal file
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import java.util.ArrayList;
import java.util.List;
public class LoopsWrongRanges {
public static void main(String[] args) {
runTest(new LoopTest(-2, 2, 1, "Normal"));
runTest(new LoopTest(-2, 2, 0, "Zero increment"));
runTest(new LoopTest(-2, 2, -1, "Increments away from stop value"));
runTest(new LoopTest(-2, 2, 10, "First increment is beyond stop value"));
runTest(new LoopTest(2, -2, 1, "Start more than stop: positive increment"));
runTest(new LoopTest(2, 2, 1, "Start equal stop: positive increment"));
runTest(new LoopTest(2, 2, -1, "Start equal stop: negative increment"));
runTest(new LoopTest(2, 2, 0, "Start equal stop: zero increment"));
runTest(new LoopTest(0, 0, 0, "Start equal stop equal zero: zero increment"));
}
private static void runTest(LoopTest loopTest) {
List<Integer> values = new ArrayList<>();
for (int i = loopTest.start ; i <= loopTest.stop ; i += loopTest.increment ) {
values.add(i);
if ( values.size() >= 10 ) {
break;
}
}
System.out.printf("%-45s %s%s%n", loopTest.comment, values, values.size()==10 ? " (loops forever)" : "");
}
private static class LoopTest {
int start;
int stop;
int increment;
String comment;
public LoopTest(int start, int stop, int increment, String comment) {
this.start = start;
this.stop = stop;
this.increment = increment;
this.comment = comment;
}
}
}