90 lines
3.2 KiB
JavaScript
90 lines
3.2 KiB
JavaScript
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const MINIMUM_BASE_AREA = 0.5;
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const MINIMUM_AREA_THREE_RATS = 1.8;
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const AREA_PER_ADDITIONAL_RAT = 0.2;
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const MAXIMUM_FALL_HEIGHT = 0.5;
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const MINIMUM_LENGTH = 0.8;
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const FAILED_BASE_AREA = "base_area";
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const FAILED_OVERALL_AREA = "overall_area";
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const FAILED_FALL_HEIGHT = "fall_height";
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const FAILED_NUM_RATS = "num_rats";
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const FAILED_LENGTH = "length";
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const FAIL_CRITERIA = {
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[FAILED_BASE_AREA]: `Die Mindestgrundfläche des Käfigs muss ${MINIMUM_BASE_AREA}m² (also z.B. 100x50cm) betragen.`,
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[FAILED_OVERALL_AREA]: "Die Gesamtfläche im Käfig ist zu klein.",
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[FAILED_FALL_HEIGHT]: `Die mögliche Fallhöhe darf nicht mehr als ${(MAXIMUM_FALL_HEIGHT * 100).toFixed(3)}cm betragen.`,
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[FAILED_NUM_RATS]: "Es müssen mindestens 3 Ratten zusammenleben, Paarhaltung ist nicht artgerecht.",
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[FAILED_LENGTH]: `Eine Seite des Käfig muss mindestens ${(MINIMUM_LENGTH * 100).toFixed(3)}cm lang sein um Rennen zu ermöglichen.`,
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};
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class Dimensions {
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constructor(length, width, height) {
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this.length = length;
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this.width = width;
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this.height = height;
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}
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toString() {
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return `${this.length}x${this.width}x${this.height}`;
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}
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static fromDict(data) {
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const { length, width, height } = data;
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return new Dimensions(length, width, height);
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}
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}
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function overallAreaNeeded(numOfRats) {
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if (numOfRats < 3 || numOfRats > 15) {
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throw new Error("This formula works only from 3 to 15 rats");
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}
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return MINIMUM_AREA_THREE_RATS + (numOfRats - 3) * AREA_PER_ADDITIONAL_RAT;
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}
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function cageCheck(dimensions, numRats, numFullFloors) {
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let failedCriteria = {};
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if (numRats < 2 || numRats > 15) {
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failedCriteria[FAILED_NUM_RATS] = FAIL_CRITERIA[FAILED_NUM_RATS];
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}
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const baseArea = dimensions.length * dimensions.width;
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if (baseArea < MINIMUM_BASE_AREA) {
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failedCriteria[FAILED_BASE_AREA] = FAIL_CRITERIA[FAILED_BASE_AREA];
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}
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const areaNeeded = overallAreaNeeded(numRats);
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if (baseArea * numFullFloors < areaNeeded) {
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failedCriteria[FAILED_OVERALL_AREA] = FAIL_CRITERIA[FAILED_OVERALL_AREA];
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}
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if (dimensions.height / numFullFloors > MAXIMUM_FALL_HEIGHT) {
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failedCriteria[FAILED_FALL_HEIGHT] = FAIL_CRITERIA[FAILED_FALL_HEIGHT];
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}
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if (dimensions.width < MINIMUM_LENGTH && dimensions.length < MINIMUM_LENGTH) {
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failedCriteria[FAILED_LENGTH] = FAIL_CRITERIA[FAILED_LENGTH];
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}
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return failedCriteria;
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}
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const expectedAreaPerNumRats = { 3: 1.8, 4: 2.0 };
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for (let numRats in expectedAreaPerNumRats) {
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console.log(`Area needed for ${numRats}: Calculated=${overallAreaNeeded(parseInt(numRats))}`);
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}
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const exampleCageChecks = [
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[[], new Dimensions(1, 0.50, 1), 4, 4],
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[[FAIL_CRITERIA[FAILED_BASE_AREA]], new Dimensions(0.99, 0.50, 1), 3, 4],
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[[FAIL_CRITERIA[FAILED_OVERALL_AREA]], new Dimensions(0.99, 0.50, 1), 4, 4],
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[[FAIL_CRITERIA[FAILED_OVERALL_AREA]], new Dimensions(0.79, 0.79, 1), 4, 4],
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];
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for (let idx in exampleCageChecks) {
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let check = exampleCageChecks[idx];
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console.log(`Example ${idx}: ${check[1]} n(rats): ${check[2]}, n(floors): ${check[3]}`);
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console.log(`Result: ${JSON.stringify(cageCheck(check[1], check[2], check[3]))}\n`);
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}
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