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22 lines
428 B
Java
22 lines
428 B
Java
package stream;
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import java.util.stream.Stream;
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public class SudokuVerifier {
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public boolean isSolved(Board board) {
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return digitStreams(board)
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.allMatch(this::isSolved);
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}
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Stream<Stream<String>> digitStreams(Board board) {
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return Stream.of(board.rows(), board.columns(), board.squares())
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.flatMap(s -> s);
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}
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boolean isSolved(Stream<String> digitStream) {
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return digitStream.distinct().count() == 9;
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}
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}
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