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close #4204
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acbin
2023-06-09 18:52:05 +08:00
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parent ad03086f54
commit 00282efd8b
521 changed files with 5233 additions and 7309 deletions
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1
src/test/java/com/thealgorithms/divideandconquer/BinaryExponentiationTest.java
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@ -35,5 +35,4 @@ public class BinaryExponentiationTest {
assertEquals(1, new BinaryExponentiation().power(1, 10000000000000000L));
assertEquals(1, new BinaryExponentiation().power(1, 100000000000000000L));
}
}

21
src/test/java/com/thealgorithms/divideandconquer/StrassenMatrixMultiplicationTest.java
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@ -13,30 +13,29 @@ class StrassenMatrixMultiplicationTest {
@Test
public void StrassenMatrixMultiplicationTest2x2() {
int[][] A = { { 1, 2 }, { 3, 4 } };
int[][] B = { { 5, 6 }, { 7, 8 } };
int[][] expResult = { { 19, 22 }, { 43, 50 } };
int[][] A = {{1, 2}, {3, 4}};
int[][] B = {{5, 6}, {7, 8}};
int[][] expResult = {{19, 22}, {43, 50}};
int[][] actResult = SMM.multiply(A, B);
assertArrayEquals(expResult, actResult);
}
@Test
void StrassenMatrixMultiplicationTest4x4() {
int[][] A = { { 1, 2, 5, 4 }, { 9, 3, 0, 6 }, { 4, 6, 3, 1 }, { 0, 2, 0, 6 } };
int[][] B = { { 1, 0, 4, 1 }, { 1, 2, 0, 2 }, { 0, 3, 1, 3 }, { 1, 8, 1, 2 } };
int[][] expResult = { { 7, 51, 13, 28 }, { 18, 54, 42, 27 }, { 11, 29, 20, 27 }, { 8, 52, 6, 16 } };
int[][] A = {{1, 2, 5, 4}, {9, 3, 0, 6}, {4, 6, 3, 1}, {0, 2, 0, 6}};
int[][] B = {{1, 0, 4, 1}, {1, 2, 0, 2}, {0, 3, 1, 3}, {1, 8, 1, 2}};
int[][] expResult = {{7, 51, 13, 28}, {18, 54, 42, 27}, {11, 29, 20, 27}, {8, 52, 6, 16}};
int[][] actResult = SMM.multiply(A, B);
assertArrayEquals(expResult, actResult);
}
@Test
void StrassenMatrixMultiplicationTestNegetiveNumber4x4() {
int[][] A = { { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 10, 11, 12 }, { 13, 14, 15, 16 } };
int[][] B = { { 1, -2, -3, 4 }, { 4, -3, -2, 1 }, { 5, -6, -7, 8 }, { 8, -7, -6, -5 } };
int[][] expResult = { { 56, -54, -52, 10 }, { 128, -126, -124, 42 }, { 200, -198, -196, 74 },
{ 272, -270, -268, 106 } };
int[][] A = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
int[][] B = {{1, -2, -3, 4}, {4, -3, -2, 1}, {5, -6, -7, 8}, {8, -7, -6, -5}};
int[][] expResult = {{56, -54, -52, 10}, {128, -126, -124, 42}, {200, -198, -196, 74},
{272, -270, -268, 106}};
int[][] actResult = SMM.multiply(A, B);
assertArrayEquals(expResult, actResult);
}
}