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3booleans (#12287) 

* BAEL-4605: code and tests for composing constraints (#12180)

* BAEL-4605: code and tests for composing constraints

* BAEL-4605: small fix and formatted the code

* BAEL-4605: code review

* BAEL-4605: code and tests for composing constraints (#12180)

* BAEL-4605: code and tests for composing constraints

* BAEL-4605: small fix and formatted the code

* BAEL-4605: code review

Co-authored-by: etrandafir93 <75391049+etrandafir93@users.noreply.github.com>
This commit is contained in:
Kai Yuan 2022-06-10 03:12:25 +02:00 committed by GitHub
parent 4d6f72f2a3
commit f2f8c0d0ac
2 changed files with 89 additions and 0 deletions
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45
core-java-modules/core-java-lang-operators-2/src/main/java/com/baeldung/threebool/ThreeBooleans.java Normal file
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package com.baeldung.threebool;
import java.util.Arrays;
public class ThreeBooleans {
public static boolean twoOrMoreAreTrueByLoop(boolean a, boolean b, boolean c) {
int count = 0;
for (boolean i : new Boolean[] { a, b, c }) {
count += i ? 1 : 0;
if (count >= 2)
return true;
}
return false;
}
public static boolean xOrMoreAreTrueByLoop(boolean[] booleans, int x) {
int count = 0;
for (boolean i : booleans) {
count += i ? 1 : 0;
if (count >= x)
return true;
}
return false;
}
public static boolean twoOrMoreAreTrueBySum(boolean a, boolean b, boolean c) {
return (a ? 1 : 0) + (b ? 1 : 0) + (c ? 1 : 0) >= 2;
}
public static boolean xOrMoreAreTrueBySum(Boolean[] booleans, int x) {
return Arrays.stream(booleans).mapToInt(b -> Boolean.TRUE.equals(b) ? 1 : 0).sum() >= x;
}
public static boolean twoorMoreAreTrueByKarnaughMap(boolean a, boolean b, boolean c) {
return (c && (a || b)) || (a && b);
}
public static boolean twoOrMoreAreTrueByOperators(boolean a, boolean b, boolean c) {
return (a && b) || (a && c) || (b && c);
}
public static boolean twoOrMoreAreTrueByXor(boolean a, boolean b, boolean c) {
return a ^ b ? c : a;
}
}

44
core-java-modules/core-java-lang-operators-2/src/test/java/com/baeldung/threebool/ThreeBooleansUnitTest.java Normal file
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package com.baeldung.threebool;
import static org.assertj.core.api.Assertions.assertThat;
import com.google.common.collect.ImmutableMap;
import java.util.Map;
import org.junit.jupiter.api.Test;
class ThreeBooleansUnitTest {
// @formatter:off
private static final Map<boolean[], Boolean> TEST_CASES_AND_EXPECTED = ImmutableMap.of(
new boolean[]{true, true, true}, true,
new boolean[]{true, true, false}, true,
new boolean[]{true, false, false}, false,
new boolean[]{false, false, false}, false
);
// @formatter:on
@Test
void given3Booleans_whenCallingTwoOrMoreAreTrueByLoop_thenGetExpectedResult() {
TEST_CASES_AND_EXPECTED.forEach((array, expected) -> assertThat(ThreeBooleans.twoOrMoreAreTrueByLoop(array[0], array[1], array[2])).isEqualTo(expected));
}
@Test
void given3Booleans_whenCallingTwoOrMoreAreTrueByCounting_thenGetExpectedResult() {
TEST_CASES_AND_EXPECTED.forEach((array, expected) -> assertThat(ThreeBooleans.twoOrMoreAreTrueBySum(array[0], array[1], array[2])).isEqualTo(expected));
}
@Test
void given3Booleans_whenCallingTwoOrMoreAreTrueByKarnaughMap_thenGetExpectedResult() {
TEST_CASES_AND_EXPECTED.forEach((array, expected) -> assertThat(ThreeBooleans.twoorMoreAreTrueByKarnaughMap(array[0], array[1], array[2])).isEqualTo(expected));
}
@Test
void given3Booleans_whenCallingTwoOrMoreAreTrueByOperators_thenGetExpectedResult() {
TEST_CASES_AND_EXPECTED.forEach((array, expected) -> assertThat(ThreeBooleans.twoOrMoreAreTrueByOperators(array[0], array[1], array[2])).isEqualTo(expected));
}
@Test
void given3Booleans_whenCallingTwoOrMoreAreTrueByXor_thenGetExpectedResult() {
TEST_CASES_AND_EXPECTED.forEach((array, expected) -> assertThat(ThreeBooleans.twoOrMoreAreTrueByXor(array[0], array[1], array[2])).isEqualTo(expected));
}
}