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Timofeev_V_S_task_1 #31

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2b848b4
Test task 1
Gomygomynomi Feb 7, 2026
834ad72
Test task 1
Gomygomynomi Feb 7, 2026
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201 changes: 182 additions & 19 deletions src/main/java/hse/java/practice/task1/RubiksCube.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,34 +2,197 @@

import java.util.Arrays;

/**
* Необходимо реализовать интерфейс Cube
* При повороте передней грани, меняются верх низ право и лево
*/
public class RubiksCube {

private static final int EDGES_COUNT = 6;

private final Edge[] edges = new Edge[EDGES_COUNT];

/**
* Создать валидный собранный кубик
* грани разместить по ордеру в енуме цветов
* грань 0 -> цвет 0
* грань 1 -> цвет 1
* ...
*/
public class RubiksCube implements Cube {

private static final int SIZE = 3;
private final Edge[] edges = new Edge[6];

private static class FaceConnection {
EdgePosition sourceFace;
int sourceRow;
int sourceCol;
boolean isRow;
boolean reverse;

FaceConnection(EdgePosition face, int row, int col, boolean isRow, boolean reverse) {
this.sourceFace = face;
this.sourceRow = row;
this.sourceCol = col;
this.isRow = isRow;
this.reverse = reverse;
}
}

public RubiksCube() {
CubeColor[] colors = CubeColor.values();
for (int i = 0; i < 6; i++) {
edges[i] = new Edge(colors[i]);
}
}

private void rotateFace(EdgePosition facePos, RotateDirection direction) {
CubeColor[][] matrix = edges[facePos.ordinal()].getParts();
CubeColor[][] rotated = new CubeColor[SIZE][SIZE];

if (direction == RotateDirection.CLOCKWISE) {
for (int i = 0; i < SIZE; i++) {
for (int j = 0; j < SIZE; j++) {
rotated[i][j] = matrix[SIZE - 1 - j][i];
}
}
} else {
for (int i = 0; i < SIZE; i++) {
for (int j = 0; j < SIZE; j++) {
rotated[i][j] = matrix[j][SIZE - 1 - i];
}
}
}

for (int i = 0; i < SIZE; i++) {
System.arraycopy(rotated[i], 0, matrix[i], 0, SIZE);
}
}

private CubeColor[] getSequence(EdgePosition face, int index, boolean isRow, boolean reverse) {
CubeColor[] result = new CubeColor[SIZE];
CubeColor[][] parts = edges[face.ordinal()].getParts();

if (isRow) {
for (int i = 0; i < SIZE; i++) {
result[i] = parts[index][i];
}
} else {
for (int i = 0; i < SIZE; i++) {
result[i] = parts[i][index];
}
}

if (reverse) {
CubeColor[] reversed = new CubeColor[SIZE];
for (int i = 0; i < SIZE; i++) {
reversed[i] = result[SIZE - 1 - i];
}
return reversed;
}
return result;
}

private void setSequence(EdgePosition face, int index, boolean isRow, CubeColor[] data) {
CubeColor[][] parts = edges[face.ordinal()].getParts();

if (isRow) {
System.arraycopy(data, 0, parts[index], 0, SIZE);
} else {
for (int i = 0; i < SIZE; i++) {
parts[i][index] = data[i];
}
}
}

private void rotateWithTransfers(EdgePosition rotatingFace,
FaceConnection[] transfers,
RotateDirection direction) {
rotateFace(rotatingFace, direction);

CubeColor[] temp = getSequence(
transfers[0].sourceFace,
transfers[0].isRow ? transfers[0].sourceRow : transfers[0].sourceCol,
transfers[0].isRow,
transfers[0].reverse
);

for (int i = 0; i < 3; i++) {
CubeColor[] current = getSequence(
transfers[i + 1].sourceFace,
transfers[i + 1].isRow ? transfers[i + 1].sourceRow : transfers[i + 1].sourceCol,
transfers[i + 1].isRow,
transfers[i + 1].reverse
);

setSequence(
transfers[i].sourceFace,
transfers[i].isRow ? transfers[i].sourceRow : transfers[i].sourceCol,
transfers[i].isRow,
current
);
}

setSequence(
transfers[3].sourceFace,
transfers[3].isRow ? transfers[3].sourceRow : transfers[3].sourceCol,
transfers[3].isRow,
temp
);
}

@Override
public void up(RotateDirection direction) {
FaceConnection[] transfers = {
new FaceConnection(EdgePosition.BACK, 0, -1, true, false),
new FaceConnection(EdgePosition.LEFT, 0, -1, true, false),
new FaceConnection(EdgePosition.FRONT, 0, -1, true, false),
new FaceConnection(EdgePosition.RIGHT, 0, -1, true, false)
};
rotateWithTransfers(EdgePosition.UP, transfers, direction);
}

@Override
public void down(RotateDirection direction) {
FaceConnection[] transfers = {
new FaceConnection(EdgePosition.FRONT, 2, -1, true, false),
new FaceConnection(EdgePosition.LEFT, 2, -1, true, false),
new FaceConnection(EdgePosition.BACK, 2, -1, true, false),
new FaceConnection(EdgePosition.RIGHT, 2, -1, true, false)
};
rotateWithTransfers(EdgePosition.DOWN, transfers,
direction == RotateDirection.CLOCKWISE ? RotateDirection.COUNTERCLOCKWISE : RotateDirection.CLOCKWISE);
}

@Override
public void left(RotateDirection direction) {
FaceConnection[] transfers = {
new FaceConnection(EdgePosition.UP, -1, 0, false, false),
new FaceConnection(EdgePosition.BACK, -1, 2, false, true),
new FaceConnection(EdgePosition.DOWN, -1, 0, false, false),
new FaceConnection(EdgePosition.FRONT, -1, 0, false, false)
};
rotateWithTransfers(EdgePosition.LEFT, transfers, direction);
}

@Override
public void right(RotateDirection direction) {
FaceConnection[] transfers = {
new FaceConnection(EdgePosition.UP, -1, 2, false, true),
new FaceConnection(EdgePosition.FRONT, -1, 2, false, true),
new FaceConnection(EdgePosition.DOWN, -1, 2, false, true),
new FaceConnection(EdgePosition.BACK, -1, 0, false, true)
};
rotateWithTransfers(EdgePosition.RIGHT, transfers, direction);
}

@Override
public void front(RotateDirection direction) {
FaceConnection[] transfers = {
new FaceConnection(EdgePosition.UP, 2, -1, true, false),
new FaceConnection(EdgePosition.LEFT, -1, 2, false, true),
new FaceConnection(EdgePosition.DOWN, 0, -1, true, false),
new FaceConnection(EdgePosition.RIGHT, -1, 0, false, true)
};
rotateWithTransfers(EdgePosition.FRONT, transfers, direction);
}


@Override
public void back(RotateDirection direction) {
FaceConnection[] transfers = {
new FaceConnection(EdgePosition.UP, 0, -1, true, true),
new FaceConnection(EdgePosition.RIGHT, -1, 2, false, true),
new FaceConnection(EdgePosition.DOWN, 2, -1, true, true),
new FaceConnection(EdgePosition.LEFT, -1, 0, false, true)
};
rotateWithTransfers(EdgePosition.BACK, transfers, direction);
}

public Edge[] getEdges() {
return edges;
}
Expand All @@ -38,4 +201,4 @@ public Edge[] getEdges() {
public String toString() {
return Arrays.toString(edges);
}
}
}