diff options
Diffstat (limited to 'scratch/deepmind/part_two/top-scores.ts')
-rw-r--r-- | scratch/deepmind/part_two/top-scores.ts | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/scratch/deepmind/part_two/top-scores.ts b/scratch/deepmind/part_two/top-scores.ts new file mode 100644 index 000000000000..ffed9ae59bc5 --- /dev/null +++ b/scratch/deepmind/part_two/top-scores.ts @@ -0,0 +1,58 @@ +function sortScores(xs: Array<number>, highest: number): Array<number> { + const counts: Array<number> = []; + const result: Array<number> = []; + + // Initialize counts + for (let i = 0; i <= highest; i += 1) { + counts.push(0); + } + + for (let i = 0; i < xs.length; i += 1) { + counts[xs[i]] += 1 + } + + for (let i = highest; i >= 0; i -= 1) { + let count: number = counts[i]; + + for (let j = 0; j < count; j += 1) { + result.push(i); + } + } + + return result; +} + + +// Tests +let desc = 'no scores'; +let actual = sortScores([], 100); +let expected = []; +assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc); + +desc = 'one score'; +actual = sortScores([55], 100); +expected = [55]; +assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc); + +desc = 'two scores'; +actual = sortScores([30, 60], 100); +expected = [60, 30]; +assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc); + +desc = 'many scores'; +actual = sortScores([37, 89, 41, 65, 91, 53], 100); +expected = [91, 89, 65, 53, 41, 37]; +assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc); + +desc = 'repeated scores'; +actual = sortScores([20, 10, 30, 30, 10, 20], 100); +expected = [30, 30, 20, 20, 10, 10]; +assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc); + +function assertEqual(a, b, desc) { + if (a === b) { + console.log(`${desc} ... PASS`); + } else { + console.log(`${desc} ... FAIL: ${a} != ${b}`); + } +} |