Published
Edited
Feb 23, 2019
Math.random()
// 1. a
function randomInteger(high, low=0){
return Math.floor(Math.random() *(high - low +1)) + low;
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random
randomInteger(4,50) // the order here does not matter
// 1. b
function testerFunction (test, min, max){ // function with 3 inputs
if (test > min && test < max){ // && = AND
return 'True'
}
else{
return 'False'
}
}
testerFunction(3, 0, 10) // True because the test value is between the min and the max values
testerFunction(3, 10, 100) // False the test its lower that the min
function bestBook(array, N) {
array = array.toLowerCase() // convert all the array in lower case
array = array.split(" ") // split string
for (var i = 0; i < array.length; i++) { // loop function to scan the array
array[i] = array[i].charAt(0).toUpperCase() + array[i].slice(1); //title case the array
}
array = array.join(" ") // join string
return `The number ${N} bestseller today is: ${array}` // print
}
//Source: https://stackoverflow.com/questions/18348422/javascript-forvar-i-array-length-v-s-for-e-in-array
bestBook('I am coding', 1) // I do not understand why it generates an error if the first input is an array?
function numberInputOpt(string, number=2) {
return bestBook(string, number) // return initial function with selected string + default number
}
numberInputOpt('Coding') // specifying just the string the number will be the default value
function stringInputOpt(number, string = 'DUSP MIT') {
return bestBook(string, number) // return initial function with selected number + default string
}
stringInputOpt(30) // specifying just the number the string will be the default value
function bothInputOpt(number = 20, string = 'DUSP MIT') {
return bestBook(string, number) // return the bestBook function with both inputs as defaulted above
}
bothInputOpt() // no inputs here = default values
function passwordValidation(string){
var digits=0 // numeric counter beginning in 0
var upperCase=0 //upper case counter beginning in 0
var specialCharacter=0 //special character counter beginning in 0
for (var i = 0; i < string.length; i++) { //scan the following
if (parseInt(string[i]) >=0){ // test and count integers
digits= digits+1
}
if (string[i] == '!'||string[i] == '@'||string[i] == '#'||string[i] == '$'||string[i] == '%'
||string[i] == '^'||string[i] == '&'||string[i] == '*'||string[i] == '('||string[i] == ')'||string[i] == '-'||string[i] == '_'||string[i] == '+'||string[i] == '='){ // test and count special characters
specialCharacter=specialCharacter+1
}
if (string[i] == string[i].toUpperCase()) { // test and count upper cases
upperCase=upperCase+1
}
}
upperCase = upperCase-digits// we need to subtract digits from the count of upper cases because they pass the upper case test
if (string.length > 7 && string.length < 15 && digits >1 && upperCase>0 &&specialCharacter>0){
return 'Congratulations your password is awesome!'
}
else {
return 'Try Again Please!'
}
}
// source: https://stackoverflow.com/questions/16140379/javascript-password-validation
passwordValidation("HeyLetMeIn?")
passwordValidation("Natalia2019*")
function expFunction (base, exponent){
return Math.pow(base, exponent)
}
// source: https://www.geeksforgeeks.org/javascript-math-pow-function/
expFunction(5, 4)
expFunction(10, 5)
expFunction(7,0)
list = [3, 7, 15, 1, 57]
function minMax(list){
var min = list[0]
for (var i = 0; i < list.length; i++){ // looping to find the min element
if (list[i] < min) // if the element being checked is lower than the previous,
min = list[i]; // min equals that element
};
var max = list[0]
for (var i = 0; i < list.length; i++){ // looping to find the max element
if (list[i] > max) // if the element being checked is higher than the previous,
max = list[i]; // max equals that element
};
return min, max; // It works when I put just min, just max, and min + max! Why does not return both?
};
minMax(list)
// Your code here
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