/
app.js
201 lines (194 loc) · 6.16 KB
/
app.js
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const { Console } = require("./console");
const console = new Console();
function createInterval(min, max) {
return {
min: min,
max: max,
read: function () {
let error;
do {
this.min = console.readNumber(`Introduzca el mínimo: `);
this.max = console.readNumber(`Introduzca el máximo: `);
error = min > max;
if (error) {
console.writeln(`El mínimo debe ser menor o igual al máximo`);
}
} while (error);
},
writeln: function () {
this.write();
console.writeln();
},
write: function () {
console.write(this.toString());
},
toString: function () {
return `[${min}, ${max}]`;
},
length: function () {
return max - min;
},
middlePoint: function () {
return min + length() / 2;
},
shifted: function (shiftment) {
return createInterval(min + shiftment, max + shiftment);
},
symmetrical: function () {
return createInterval(-max, -min);
},
adjust: function (interval) {
return createInterval(adjustValue(min), adjustValue(max));
function adjustValue(value) {
if (value < interval.min) {
return interval.min;
} else if (value > interval.max) {
return interval.max;
}
return value;
}
},
scale: function (value) {
let scaledMiddle = min + this.length() / 2;
let scaledHalfLength = this.length() * value / 2;
return createInterval(scaledMiddle - scaledHalfLength, scaledMiddle + scaledHalfLength);
},
includes: function (value) {
if (typeof value === `number`) {
return min <= value && value <= max;
}
return this.includes(value.min) && this.includes(value.max);
},
intersected: function (interval) {
return this.includes(interval.min)
|| this.includes(interval.max)
|| interval.includes(this);
},
intersection: function (interval) {
if (this.includes(interval)) {
return interval;
}
if (interval.includes(this)) {
return this;
}
if (this.includes(interval.min)) {
return createInterval(interval.min, max);
}
if (this.includes(interval.max)) {
return createInterval(min, interval.max);
}
return null;
},
union: function (interval) {
if (!this.intersected(interval)) {
return null;
}
return createInterval(
min < interval.min ? min : interval.min,
max > interval.max ? max : interval.max
);
},
values: function (amount) {
if (amount === 1) {
const middlePoint = (max - min) / 2;
return [middlePoint];
}
let distance = this.length() / (amount - 1);
let array = [min];
for (let i = 1; i < amount - 1; i++) {
array[i] = array[i - 1] + distance;
}
array[array.length] = max;
return array;
},
split: function (amount) {
let values = this.values(amount + 1);
let array = [];
for (let i = 0; i < amount; i++) {
array[i] = createInterval(values[i], values[i + 1]);
}
return array;
},
equals: function (interval) {
return min === interval.min && max === interval.max;
},
clone: function () {
return createInterval(min, max);
}
};
}
createInterval.MIN = -50;
createInterval.MAX = 50;
createInterval.createRandom = function (amount) {
let intervals = [];
for (let i = 0; i < amount; i++) {
let min = randomValue();
let max = randomValue();
if (min > max) {
let temp = min;
min = max;
max = temp;
}
intervals[i] = createInterval(min, max);
}
return intervals;
function randomValue() {
return parseInt(Math.random() * (createInterval.MAX - createInterval.MIN)) + createInterval.MIN;
}
}
const intervals = createInterval.createRandom(3);
const tests = [
interval =>
`${interval.toString()}.toString() => ${interval.toString()}`,
interval =>
`${interval.toString()}.length() => ${interval.length()}`,
(interval, index) => {
let value = index - intervals.length / 2;
return `${interval.toString()}.shifted(${value}) => ${interval.shifted(value)}`
},
interval =>
`${interval.toString()}.symmetrical() => ${interval.symmetrical()}`,
(interval, index, intervals) => {
let next = (index + 1) % intervals.length;
return `${interval.toString()}.adjust(${intervals[next].toString()}) => ${interval.adjust(intervals[next])}`;
},
(interval, index) =>
`${interval.toString()}.scale(${index}) => ${interval.scale(index)}`,
(interval, index, intervals) => {
let value = index - intervals.length / 2;
return `${interval.toString()}.includes(${value}) => ${interval.includes(value)}`;
},
(interval, index, intervals) => {
let next = (index + 1) % intervals.length;
return `${interval.toString()}.includes(${intervals[next].toString()}) => ${interval.includes(intervals[next])}`;
},
(interval, index, intervals) => {
let next = (index + 1) % intervals.length;
return `${interval.toString()}.intersected(${intervals[next].toString()}) => ${interval.intersected(intervals[next])}`;
},
(interval, index, intervals) => {
let next = (index + 1) % intervals.length;
return `${interval.toString()}.intersection(${intervals[next].toString()}) => ${interval.intersection(intervals[next])}`;
},
(interval, index, intervals) => {
let next = (index + 1) % intervals.length;
return `${interval.toString()}.union(${intervals[next].toString()}) => ${interval.union(intervals[next])}`;
},
(interval, index) => {
let amount = index + 1;
return `${interval.toString()}.values(${amount}) => ${interval.values(amount).reduce((previous, current) => `${previous}${current} `, ``)}`
},
(interval, index) => {
let amount = index + 1;
return `${interval.toString()}.split(${amount}) => ${interval.split(amount).reduce((previous, current) => `${previous}${current.toString()} `, ``)}`
}
];
console.writeln(
tests.map(
test => intervals.map(test)).reduce(
(previous, block) =>
`${previous}${block.reduce(
(previous, msg) =>
`${previous}${msg}\n`,
``)}\n`,
``));