31 lines
1,007 B
TypeScript
31 lines
1,007 B
TypeScript
import type { SimulationProbabilities, SimulationResult } from "./types";
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export const SIMULATION_PROBABILITY_KEYS = [
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"probFirst",
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"probSecond",
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"probThird",
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"probFourth",
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"probFifth",
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"probSixth",
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"probSeventh",
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"probEighth",
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] as const satisfies ReadonlyArray<keyof SimulationProbabilities>;
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/**
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* Normalize each placement-probability column so every finishing position sums
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* to exactly 1.0 across all participants after Monte Carlo floating-point math.
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*/
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export function normalizeSimulationResultColumns(results: SimulationResult[]): void {
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if (results.length === 0) return;
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for (const key of SIMULATION_PROBABILITY_KEYS) {
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const colSum = results.reduce((sum, result) => sum + result.probabilities[key], 0);
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const residual = 1.0 - colSum;
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if (residual !== 0) {
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const maxResult = results.reduce((best, result) =>
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result.probabilities[key] > best.probabilities[key] ? result : best
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);
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maxResult.probabilities[key] += residual;
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}
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}
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}
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