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Enhance docs, add more tests in SwapAdjacentBits (#5861)

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Hardik Pawar
2024-10-29 23:42:46 +05:30
committed by GitHub
parent b31bc86192
commit 54567e2ed3
2 changed files with 48 additions and 10 deletions
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21
src/test/java/com/thealgorithms/bitmanipulation/SwapAdjacentBitsTest.java
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@@ -8,13 +8,20 @@ import org.junit.jupiter.params.provider.CsvSource;
class SwapAdjacentBitsTest {
@ParameterizedTest
@CsvSource({
"2, 1", // 2 (10 in binary) should become 1 (01 in binary)
"43, 23", // 43 should become 23
"153, 102", // 153 should become 102
"15, 15", // 15 (1111) remains 15 (1111)
"0, 0" // 0 (0000) remains 0 (0000)
})
@CsvSource({"2, 1", // 2 (binary: 10) -> 1 (binary: 01)
"43, 23", // 43 (binary: 101011) -> 23 (binary: 010111)
"153, 102", // 153 (binary: 10011001) -> 102 (binary: 01100110)
"15, 15", // 15 (binary: 1111) -> 15 (binary: 1111) (no change)
"0, 0", // 0 (binary: 0000) -> 0 (binary: 0000) (no change)
"1, 2", // 1 (binary: 01) -> 2 (binary: 10)
"170, 85", // 170 (binary: 10101010) -> 85 (binary: 01010101)
"85, 170", // 85 (binary: 01010101) -> 170 (binary: 10101010)
"255, 255", // 255 (binary: 11111111) -> 255 (binary: 11111111) (no change)
"128, 64", // 128 (binary: 10000000) -> 64 (binary: 01000000)
"1024, 2048",
"-1, -1", // -1 (all bits 1) remains -1 (no change due to two's complement)
"-2, -3", // -2 (binary: ...1110) -> -3 (binary: ...1101)
"2147483647, -1073741825", "-2147483648, -1073741824"})
void
testSwapAdjacentBits(int input, int expected) {
assertEquals(expected, SwapAdjacentBits.swapAdjacentBits(input));