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3979e824b7
* Add Power of Four Check using bit manipulation - Implements isPowerOfFour method using bit manipulation - Checks if number is power of two and has bit at even position - Includes comprehensive unit tests - Fixes #6940 * Fix code formatting in PowerOfFourTest * Move PowerOfFour classes to maths package * Fix package declaration in PowerOfFourTest * Fix code formatting in PowerOfFourTest * Remove redundant import from PowerOfFourTest * Remove unrelated file
37 lines
1.1 KiB
Java
37 lines
1.1 KiB
Java
package com.thealgorithms.maths;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import org.junit.jupiter.api.Test;
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class PowerOfFourTest {
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@Test
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void testPowersOfFour() {
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assertTrue(PowerOfFour.isPowerOfFour(1));
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assertTrue(PowerOfFour.isPowerOfFour(4));
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assertTrue(PowerOfFour.isPowerOfFour(16));
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assertTrue(PowerOfFour.isPowerOfFour(64));
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assertTrue(PowerOfFour.isPowerOfFour(256));
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assertTrue(PowerOfFour.isPowerOfFour(1024));
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}
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@Test
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void testNonPowersOfFour() {
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assertFalse(PowerOfFour.isPowerOfFour(2));
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assertFalse(PowerOfFour.isPowerOfFour(3));
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assertFalse(PowerOfFour.isPowerOfFour(5));
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assertFalse(PowerOfFour.isPowerOfFour(8));
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assertFalse(PowerOfFour.isPowerOfFour(15));
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assertFalse(PowerOfFour.isPowerOfFour(32));
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}
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@Test
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void testEdgeCases() {
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assertFalse(PowerOfFour.isPowerOfFour(0));
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assertFalse(PowerOfFour.isPowerOfFour(-1));
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assertFalse(PowerOfFour.isPowerOfFour(-4));
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}
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}
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