90 lines
3.0 KiB
JavaScript
90 lines
3.0 KiB
JavaScript
/* Copyright (c) 2017, 2022, Oracle and/or its affiliates. */
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/******************************************************************************
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*
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* This software is dual-licensed to you under the Universal Permissive License
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* (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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* 2.0 as shown at https://www.apache.org/licenses/LICENSE-2.0. You may choose
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* either license.
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*
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* If you elect to accept the software under the Apache License, Version 2.0,
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* the following applies:
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* NAME
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* random.js
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*
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* DESCRIPTION
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* generate a random string which length is 'length', with specialStr
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* in it's head and tail
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*
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*****************************************************************************/
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'use strict';
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var random = exports;
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module.exports = random;
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// generate a random string which length is 'length', with specialStr in it's head and tail
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random.getRandomString = function(length, specialStr) {
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var str = '';
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var strLength = length - specialStr.length * 2;
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for (; str.length < strLength; str += Math.random().toString(36).slice(2));
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str = str.substr(0, strLength);
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str = specialStr + str + specialStr;
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return str;
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};
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random.getRandomLengthString = function(length) {
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var str = '';
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for (; str.length < length; str += Math.random().toString(36).slice(2));
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str = str.substr(0, length);
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return str;
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};
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random.getRandomNumArray = function(size) {
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var numbers = new Array(size);
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for (var i = 0; i < numbers.length; i++) {
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numbers[i] = this.getRandomInt(1, 9999999);
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}
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return numbers;
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};
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random.getRandomInt = function(min, max) {
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min = Math.ceil(min);
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max = Math.floor(max);
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return Math.floor(Math.random() * (max - min)) + min;
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};
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random.getIntArray = function(N) {
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var arr = Array.apply(null, Array(N));
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// The map() method creates a new array with the results of calling a provided function on every element in this array.
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// var new_array = arr.map(callback[, thisArg])
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// Parameters
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// callback
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// Function that produces an element of the new Array, taking three arguments:
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// currentValue
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// The current element being processed in the array.
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// index
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// The index of the current element being processed in the array.
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// array
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// The array map was called upon.
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// thisArg
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// Optional. Value to use as this when executing callback.
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// Return value
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// A new array with each element being the result of the callback function.
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return arr.map(function(x, i) {
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return i;
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});
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};
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