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@dao3fun/random-pro

v1.1.0

Published

提供更丰富的随机方法

Readme

RandomPro

介绍

RandomPro 提供了多种常用的随机方法,如随机整数、随机小数、随机数组元素、打乱数组等。

使用

引入包

在你的 JavaScript 或 TypeScript 文件中,通过import语句引入@dao3fun/random-pro

import RandomPro from "@dao3fun/random-pro";

基本用法

// (如有需要)设置随机种子,默认使用当前时间戳
RandomPro.seed(123);
// 生成一个[0, 1)区间内的随机小数
console.log(RandomPro.random());
// 生成一个[1, 100]区间内的随机整数
console.log(RandomPro.randint(1, 100));
// 生成一个[1, 100)区间内的随机小数
console.log(RandomPro.uniform(1, 100));
// 从数组中随机选取一个元素
const arr = [1, 2, 3, 4, 5];
console.log(RandomPro.choice(arr));
// 从数组中随机选取3个元素
console.log(RandomPro.choice(arr, 3));
// 打乱数组
const shuffledArr = RandomPro.shuffle(arr);
console.log(shuffledArr);

API

class RandomPro {
	static seed(seed: number): void;
	static random(): number;
	static randint(a: number, b: number): number;
	static uniform(a: number, b: number): number;
	static choice<T>(arr: T[], num?: number): T[];
	static shuffle<T>(arr: T[]): T[];
}

seed

seed(seed: number): void
  • 设置随机种子,用于控制随机数结果。
  • seed: 随机数种子, 整数。
  • 如不设置,默认使用当前时间戳。

random

random(): number
  • 生成一个[0, 1)区间内的随机小数。

randint

randint(a: number, b: number): number
  • 生成一个[a, b]区间内的随机整数。
  • a: 整数,区间左端点。
  • b: 整数,区间右端点。
  • 如 a>b,则交换 a 和 b。

uniform

uniform(a: number, b: number): number
  • 生成一个[a, b)区间内的随机小数。
  • a: 数字,区间左端点。
  • b: 数字,区间右端点。
  • 如 a>b,则交换 a 和 b。

choice

choice<T>(arr: T[], num?: number): T[];
  • 从数组中随机选取一个元素。
  • T(泛型): 数组元素类型。
  • arr: 非空数组。
  • num = 1: 整数,选取数量,默认为 1。
  • 如 num > arr.length,则返回全部元素。

shuffle

shuffle<T>(arr: T[]): T[]
  • 打乱数组。
  • T(泛型): 数组元素类型。
  • arr: 非空数组。