fix(challenges): Add Project Euler problem 11 solution and tests (#16480)
Added tests and a working solution for Project Euler problem 11. Also added some styling to the problem's description to highlight four numbers in red to be more in-line with the description on the projecteuler.net.pull/18182/head
Kristofer Koishigawa
mrugesh mohapatra
parent
f166d4c464
commit
c2e057aadc
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@ -307,17 +307,51 @@
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"type": "bonfire",
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"title": "Problem 11: Largest product in a grid",
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"tests": [
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"assert.strictEqual(euler11(), 70600674, 'message: <code>euler11()</code> should return 70600674.');"
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"assert.strictEqual(largestGridProduct(grid), 70600674, 'message: <code>largestGridProduct(grid)</code> should return 70600674.');",
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"assert.strictEqual(largestGridProduct(testGrid), 14169081, 'message: <code>largestGridProduct(testGrid)</code> should return 14169081.');"
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],
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"solutions": [],
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"solutions": ["function largestGridProduct(arr) {\n let maxProduct = 0;\n let currProduct = 0;\n\n function maxProductChecker(n) {\n if (n > maxProduct) {\n return maxProduct = n;\n }\n }\n\n // loop rows\n for (let r = 0; r < arr.length; r++) {\n // loop columns\n for (let c = 0; c < arr[r].length; c++) {\n const limit = arr[r].length - 3;\n\n // check horizontal\n if (c < limit) {\n currProduct = arr[r][c] * arr[r][c + 1] * arr[r][c + 2] * arr[r][c + 3];\n maxProductChecker(currProduct);\n }\n\n // check vertical\n if (r < limit) {\n currProduct = arr[r][c] * arr[r + 1][c] * arr[r + 2][c] * arr[r + 3][c];\n maxProductChecker(currProduct);\n }\n\n // check diagonal [\\]\n if (c < limit && r < limit) {\n currProduct = arr[r][c] * arr[r + 1][c + 1] * arr[r + 2][c + 2] * arr[r + 3][c + 3];\n maxProductChecker(currProduct);\n }\n\n // check diagonal [/]\n if (c > 3 && r < limit) {\n currProduct = arr[r][c] * arr[r + 1][c - 1] * arr[r + 2][c - 2] * arr[r + 3][c - 3];\n maxProductChecker(currProduct);\n }\n }\n }\n\n return maxProduct;\n}\n\n const grid = [ [8, 2, 22, 97, 38, 15, 0, 40, 0, 75, 4, 5, 7, 78, 52, 12, 50, 77, 91, 8],\n [49, 49, 99, 40, 17, 81, 18, 57, 60, 87, 17, 40, 98, 43, 69, 48, 4, 56, 62, 0],\n [81, 49, 31, 73, 55, 79, 14, 29, 93, 71, 40, 67, 53, 88, 30, 3, 49, 13, 36, 65],\n [52, 70, 95, 23, 4, 60, 11, 42, 69, 24, 68, 56, 1, 32, 56, 71, 37, 2, 36, 91],\n [22, 31, 16, 71, 51, 67, 63, 89, 41, 92, 36, 54, 22, 40, 40, 28, 66, 33, 13, 80],\n [24, 47, 32, 60, 99, 3, 45, 2, 44, 75, 33, 53, 78, 36, 84, 20, 35, 17, 12, 50],\n [32, 98, 81, 28, 64, 23, 67, 10, 26, 38, 40, 67, 59, 54, 70, 66, 18, 38, 64, 70],\n [67, 26, 20, 68, 2, 62, 12, 20, 95, 63, 94, 39, 63, 8, 40, 91, 66, 49, 94, 21],\n [24, 55, 58, 5, 66, 73, 99, 26, 97, 17, 78, 78, 96, 83, 14, 88, 34, 89, 63, 72],\n [21, 36, 23, 9, 75, 0, 76, 44, 20, 45, 35, 14, 0, 61, 33, 97, 34, 31, 33, 95],\n [78, 17, 53, 28, 22, 75, 31, 67, 15, 94, 3, 80, 4, 62, 16, 14, 9, 53, 56, 92],\n [16, 39, 5, 42, 96, 35, 31, 47, 55, 58, 88, 24, 0, 17, 54, 24, 36, 29, 85, 57],\n [86, 56, 0, 48, 35, 71, 89, 7, 5, 44, 44, 37, 44, 60, 21, 58, 51, 54, 17, 58],\n [19, 80, 81, 68, 5, 94, 47, 69, 28, 73, 92, 13, 86, 52, 17, 77, 4, 89, 55, 40],\n [4, 52, 8, 83, 97, 35, 99, 16, 7, 97, 57, 32, 16, 26, 26, 79, 33, 27, 98, 66],\n [88, 36, 68, 87, 57, 62, 20, 72, 3, 46, 33, 67, 46, 55, 12, 32, 63, 93, 53, 69],\n [4, 42, 16, 73, 38, 25, 39, 11, 24, 94, 72, 18, 8, 46, 29, 32, 40, 62, 76, 36],\n [20, 69, 36, 41, 72, 30, 23, 88, 34, 62, 99, 69, 82, 67, 59, 85, 74, 4, 36, 16],\n [20, 73, 35, 29, 78, 31, 90, 1, 74, 31, 49, 71, 48, 86, 81, 16, 23, 57, 5, 54],\n [1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 1, 89, 19, 67, 48]\n];\n\nconst testGrid = [\n [40, 17, 81, 18, 57],\n [74, 4, 36, 16, 29],\n [36, 42, 69, 73, 45],\n [51, 54, 69, 16, 92],\n [7, 97, 57, 32, 16]\n];"],
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"translations": {},
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"challengeSeed": [
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"function euler11() {",
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"function largestGridProduct(arr) {",
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" // Good luck!",
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" return true;",
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" return arr;",
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"}",
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"",
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"euler11();"
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"// Only change code above this line",
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"const grid = [",
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" [8, 2, 22, 97, 38, 15, 0, 40, 0, 75, 4, 5, 7, 78, 52, 12, 50, 77, 91, 8],",
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" [49, 49, 99, 40, 17, 81, 18, 57, 60, 87, 17, 40, 98, 43, 69, 48, 4, 56, 62, 0],",
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" [81, 49, 31, 73, 55, 79, 14, 29, 93, 71, 40, 67, 53, 88, 30, 3, 49, 13, 36, 65],",
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" [52, 70, 95, 23, 4, 60, 11, 42, 69, 24, 68, 56, 1, 32, 56, 71, 37, 2, 36, 91],",
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" [22, 31, 16, 71, 51, 67, 63, 89, 41, 92, 36, 54, 22, 40, 40, 28, 66, 33, 13, 80],",
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" [24, 47, 32, 60, 99, 3, 45, 2, 44, 75, 33, 53, 78, 36, 84, 20, 35, 17, 12, 50],",
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" [32, 98, 81, 28, 64, 23, 67, 10, 26, 38, 40, 67, 59, 54, 70, 66, 18, 38, 64, 70],",
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" [67, 26, 20, 68, 2, 62, 12, 20, 95, 63, 94, 39, 63, 8, 40, 91, 66, 49, 94, 21],",
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" [24, 55, 58, 5, 66, 73, 99, 26, 97, 17, 78, 78, 96, 83, 14, 88, 34, 89, 63, 72],",
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" [21, 36, 23, 9, 75, 0, 76, 44, 20, 45, 35, 14, 0, 61, 33, 97, 34, 31, 33, 95],",
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" [78, 17, 53, 28, 22, 75, 31, 67, 15, 94, 3, 80, 4, 62, 16, 14, 9, 53, 56, 92],",
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" [16, 39, 5, 42, 96, 35, 31, 47, 55, 58, 88, 24, 0, 17, 54, 24, 36, 29, 85, 57],",
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" [86, 56, 0, 48, 35, 71, 89, 7, 5, 44, 44, 37, 44, 60, 21, 58, 51, 54, 17, 58],",
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" [19, 80, 81, 68, 5, 94, 47, 69, 28, 73, 92, 13, 86, 52, 17, 77, 4, 89, 55, 40],",
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" [4, 52, 8, 83, 97, 35, 99, 16, 7, 97, 57, 32, 16, 26, 26, 79, 33, 27, 98, 66],",
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" [88, 36, 68, 87, 57, 62, 20, 72, 3, 46, 33, 67, 46, 55, 12, 32, 63, 93, 53, 69],",
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" [4, 42, 16, 73, 38, 25, 39, 11, 24, 94, 72, 18, 8, 46, 29, 32, 40, 62, 76, 36],",
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" [20, 69, 36, 41, 72, 30, 23, 88, 34, 62, 99, 69, 82, 67, 59, 85, 74, 4, 36, 16],",
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" [20, 73, 35, 29, 78, 31, 90, 1, 74, 31, 49, 71, 48, 86, 81, 16, 23, 57, 5, 54],",
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" [1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 1, 89, 19, 67, 48]",
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"];",
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"",
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"const testGrid = [",
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" [40, 17, 81, 18, 57],",
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" [74, 4, 36, 16, 29],",
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" [36, 42, 69, 73, 45],",
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" [51, 54, 69, 16, 92],",
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" [7, 97, 57, 32, 16]",
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"];",
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"",
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"largestGridProduct(grid);",
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"largestGridProduct(testGrid);"
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],
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"description": [
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"In the 20×20 grid below, four numbers along a diagonal line have been marked in red.",
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@ -328,10 +362,10 @@
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"52 70 95 23 04 60 11 42 69 24 68 56 01 32 56 71 37 02 36 91",
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"22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80",
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"24 47 32 60 99 03 45 02 44 75 33 53 78 36 84 20 35 17 12 50",
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"32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70",
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"67 26 20 68 02 62 12 20 95 63 94 39 63 08 40 91 66 49 94 21",
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"24 55 58 05 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72",
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"21 36 23 09 75 00 76 44 20 45 35 14 00 61 33 97 34 31 33 95",
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"32 98 81 28 64 23 67 10 <span style='color: red'><b>26</b></span> 38 40 67 59 54 70 66 18 38 64 70",
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"67 26 20 68 02 62 12 20 95 <span style='color: red'><b>63</b></span> 94 39 63 08 40 91 66 49 94 21",
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"24 55 58 05 66 73 99 26 97 17 <span style='color: red'><b>78</b></span> 78 96 83 14 88 34 89 63 72",
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"21 36 23 09 75 00 76 44 20 45 35 <span style='color: red'><b>14</b></span> 00 61 33 97 34 31 33 95",
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"78 17 53 28 22 75 31 67 15 94 03 80 04 62 16 14 09 53 56 92",
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"16 39 05 42 96 35 31 47 55 58 88 24 00 17 54 24 36 29 85 57",
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"86 56 00 48 35 71 89 07 05 44 44 37 44 60 21 58 51 54 17 58",
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