/**
 * Calculate the nth percentile of values in an array
 * @param array - Array of numbers
 * @param percentile - Percentile value (0-100)
 * @returns The percentile value
 * @example
 * percentile([1, 2, 3, 4, 5], 50); // 3 (50th percentile - median)
 * percentile([1, 2, 3, 4, 5], 25); // 2 (25th percentile)
 * percentile([1, 2, 3, 4, 5], 75); // 4 (75th percentile)
 */
export declare const percentile: (array: number[], percentile: number) => number;