59 lines
1.4 KiB
TypeScript
59 lines
1.4 KiB
TypeScript
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function sortScores(xs: Array<number>, highest: number): Array<number> {
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const counts: Array<number> = [];
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const result: Array<number> = [];
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// Initialize counts
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for (let i = 0; i <= highest; i += 1) {
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counts.push(0);
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}
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for (let i = 0; i < xs.length; i += 1) {
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counts[xs[i]] += 1
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}
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for (let i = highest; i >= 0; i -= 1) {
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let count: number = counts[i];
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for (let j = 0; j < count; j += 1) {
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result.push(i);
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}
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}
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return result;
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}
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// Tests
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let desc = 'no scores';
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let actual = sortScores([], 100);
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let expected = [];
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assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc);
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desc = 'one score';
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actual = sortScores([55], 100);
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expected = [55];
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assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc);
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desc = 'two scores';
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actual = sortScores([30, 60], 100);
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expected = [60, 30];
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assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc);
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desc = 'many scores';
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actual = sortScores([37, 89, 41, 65, 91, 53], 100);
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expected = [91, 89, 65, 53, 41, 37];
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assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc);
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desc = 'repeated scores';
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actual = sortScores([20, 10, 30, 30, 10, 20], 100);
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expected = [30, 30, 20, 20, 10, 10];
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assertEqual(JSON.stringify(actual), JSON.stringify(expected), desc);
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function assertEqual(a, b, desc) {
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if (a === b) {
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console.log(`${desc} ... PASS`);
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} else {
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console.log(`${desc} ... FAIL: ${a} != ${b}`);
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}
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}
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