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Solution to 2018 AP FRQ ArrayTester - https://clsc.be/27
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| public static int[] getColumn(int[][] arr2D, int c) { | |
| int[] out = new int[arr2D.length]; | |
| for (int r=0; r<arr2D.length; r++) | |
| out[r] = arr2D[r][c]; | |
| return out; | |
| } |
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| public static boolean isLatin(int[][] square) { | |
| int[] firstRow = square[0]; | |
| if (containsDuplicates(firstRow)) | |
| return false; | |
| for (int r=1; r<square.length; r++) | |
| if (!hasAllValues(firstRow, square[r])) | |
| return false; | |
| for (int c=0; c<square[0].length; c++) | |
| if (!hasAllValues(firstRow, getColumn(square, c)) | |
| return false; | |
| return true; | |
| } |
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