Skip to content

completed given tasks for functions, arrays, and methods #1

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
juliekhov wants to merge 1 commit into
base: master
Choose a base branch
from
Open

completed given tasks for functions, arrays, and methods #1

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
281 changes: 257 additions & 24 deletions index.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,41 +1,64 @@
/************************************************************** Task 1: Warm-up! **************************************************************/
//Task a: declare a variable called votingAge, console log true if age > 18 (no function required)

/* use let not var as var allows you to re-declare */


let votingAge;
if(age > 18) {
console.log(true);
}


//Task b: declare a variable and then use a conditional to change the value of that variable based on the value assigned to a second variable (no function required)

let num1 = 1, num2 = 3;

if(num2 < 10) {
// Under this condition, we will increment or decrement num1 by 1.
num1++;
} else {
num1--;
}



//Task c: Convert string ("1999") to integer (1999) (no function required) // hint look up the Number method


let year = "1999";
parseInt(year);


//parseInt will return undefined if String not made out of digits

//Task d: Write a function to multiply a*b


let a = 13, b = 7;
function multiply (a, b) {
let productNum;
productNum = a * b;
return productNum;
// return a * b;
}



/************************************************************** Task 2 **************************************************************/
//Age in Dog years
//write a function that takes your age and returns it to you in dog years - they say that 1 human year is equal to seven dog years
let age = 18;


function calcDogYears(age) {
return 7*age;
}



/************************************************************** Task 3 **************************************************************/
//Dog feeder
//takes weight in pounds and age in years (note if the dog is a puppy the age will be a decimal) and returns the number of pounds of raw food to feed in a day.

//feeding requirements
//feeding requirements:
// adult dogs at least 1 year
// up to 5 lbs - 5% of their body weight
// 6 - 10 lbs - 4% of their body weight
Expand All @@ -48,54 +71,186 @@
// 7 - 12 months 4% of their body weight

// when you are finished invoke your function with the weight of 15 lbs and the age of 1 year - if your calculations are correct your result should be 0.44999999999999996


let weight = 15, age = 1;

function calcFeedDaily(weight, age) {
if(age >= 1) {
// First condition weight is up to 5 lb
if(weight <= 5) {
return 0.05*weight;
}
// Second condition weight is above 6 and below 10 lb
else if(weight >= 6 && weight <= 10) {
return 0.04*weight;
}
else if(weight >= 11 && weight <= 15) {
return 0.03*weight;
}
else if (weight > 15) {
return 0.02*weight;
}
else {
return null;
}

}
else if (age < 1) {
if(age*12 < 2) {
return null;
}
else if(age*12 >= 2 && age*12 <= 4) {
return 0.10*weight;
}
else if(age*12 > 4 && age*12 <= 7) {
return 0.05*weight;
}
else if(age*12 > 7 && age*12 <= 12) {
return 0.04*weight;
}
else {
return null;
}
}
}



/************************************************************** Task 4 **************************************************************/
// Rock, Paper, Sissors
// Your function should take a string (either rock paper or sissors)
// Your function should take a string (either rock, paper, or scissors)
// it should return you won or you lost based on the rules of the game (you may need to look up the rules if you have not played before)
// use math.random to determine the computers choice
// hint while you can complete this with only conditionals based on strings it may help to equate choice to a number


let yourChoice = "rock";

function findWinner(yourChoice) {
// Math.random gives a random number between 0 and 1
// Multiply by 10 to get a number between 0.23 or 1.5674 or 2.286 ... and 9.00017
// Truncate and only keep the 0, 1, 2, 3, ..., or 9
// Apply mod 3 to get remainders 0, 1, 2
// Add 1 to get results of only 1, 2, 3 for R, P, S
// So this method will produce a range of outputs, specifically 1, 2, 3
let compChoice = Math.trunc(Math.random*10)) % 3 + 1;

if (compChoice == 1) {
compChoice = "rock";
}
else if (compChoice == 2) {
compChoice = "paper";
}
else if (compChoice == 3) {
compChoice = "scissors";
}

if (yourChoice == "rock" && compChoice == "rock") {
return null;
}
else if (yourChoice == "rock" && compChoice == "scissors") {
return "you won";
}
else if (yourChoice == "rock" && compChoice == "paper") {
return "you lost";
}
else if (yourChoice == "scissors" && compChoice == "rock") {
return "you lost";
}
else if (yourChoice == "scissors" && compChoice == "paper") {
return "you won";
}
else if (yourChoice == "scissors" && compChoice == "scissors") {
return null;
}
else if (yourChoice == "paper" && compChoice == "rock") {
return "you won";
}
else if (yourChoice == "paper" && compChoice == "paper") {
return null;
}
else if (yourChoice == "paper" && compChoice == "scissors") {
return "you lost";
}

}


/************************************************************** Task 5 **************************************************************/
//Metric Converter
//a. KM to Miles - should take the number of kilometers and convert it to the equal number of miles

// mental plan:
// 0.621371 miles in 1 km
// km * mi / km ==> mi (km cancels)
// x km * 0.621371 mi / 1 km = 0.621371*x mi

function calcMiles(numKm) {
return 0.621371*numKm;
}


let numKm = 5;
console.log(calcMiles(numKm));

//b. Feet to CM - should take the number of feet and convert it to the equal number of centimeters

// mental plan:
// x ft * (12 in. / 1 ft) *( 2.54 cm / 1 in.)
// x*12*2.54

function calcCm(numFt) {
return numFt*12*2.54;
}


//let numFt = 5;
//console.log(calcCm(numFt));

/************************************************************** Task 6 **************************************************************/
// 99 bottles of soda on the wall
// create a function called annoyingSong
// the function should take a starting number as an argument and count down - at each iteration it should log (number) bottles of soda on the wall, (number) bottles of soda, take one down pass it around (number left over) bottles of soda on the wall`
// the function should take a starting number as an argument and count down - at each iteration it should log (number) bottles of soda on the wall,
// (number) bottles of soda, take one down pass it around (number left over) bottles of soda on the wall`

function annoyingSong(numStart) {
for(let i = numStart; i > 0; i--) {
console.log(i +" bottles of soda on the wall, "+ i +" bottles of soda, take one down, pass it around ");
i--;
console.log(i +" bottles of soda on the wall");
i++;
}
}

// let numStart = 99;
// annoyingSong(numStart);



/************************************************************** Task 7 **************************************************************/
//Grade Calculator
//write a javaScript program that takes a mark out of 100 and returns a corisponding letter grade
//write a javaScript program that takes a mark out of 100 and returns a corresponding letter grade
//90s should be A
//80s should be B
//70s should be Cs
//70s should be C
//60s should be D
//and anything below 60 should be F


function calcGrade(mark) {
if(mark >= 90){
return "A";
} else if(mark >= 80 && mark < 90) {
return "B";
} else if(mark >= 70 && mark < 80) {
return "C";
} else if(mark >= 60 && mark < 70) {
return "D";
} else if(mark >= 50 && mark < 60) {
return "F";
} else if (mark >= 0 && mark < 50) {
return "You can always message your TL on slack! Practice makes perfect!";
} else {
return "Not a valid mark.";
}
}

// let mark = 87;
// calcGrade(mark);



Expand All @@ -104,15 +259,93 @@
// Hint - you may need to study tomorrow's traning kit on arrays
// try looking up the .includes() method



// mental strategy:
// Use string as an array, and a loop to check each position
// if the character is either a or A, e or E, i or I, o or O, u or U then count it as a vowel

// parameter taken into findNumVowels function is the string defined prior to the function call on line 287 within the console log statement
function findNumVowels(msg) {
// counter for the number of vowels in string
let vowels = 0;
// for loop checks the 0th character through one less than the total number of characters in string
for(let i = 0; i < msg.length; i++) {
// use conditional to check for vowels in the string called msg
if(msg[i] == 'a' || msg[i] == 'A' || msg[i] == 'e' || msg[i] == 'E' || msg[i] == 'i' || msg[i] == 'I'
|| msg[i] == 'o' || msg[i] == 'O' || msg[i] == 'u' || msg[i] == 'U') {
// increment counter
vowels++;
}
}
// after for loop return value of vowels counter
return vowels;
}

// to run code must have defined string
//let msg = "Hello, portfolios are hard.";
// call function in console log statement to print the number being returned
//console.log(findNumVowels(msg));


/************************************************************** Stretch **************************************************************/
//Take Rock, Paper, Sissors further
//update your rock papers sissors code below to take a prompt from a user using the window object




//Take Rock, Paper, Scissors further
//update your rock, paper, scissors code below to take a prompt from a user using the window object

/*<h2>Rock, Paper, Scissors</h2>

<button onclick="myFunction()">What will you choose?</button>

<p id="rps"></p>

use window prompt method */

function findWinner() {

let yourChoice = prompt("Enter rock, paper, scissors: ");
// Math.random gives a random number between 0 and 1
// Multiply by 10 to get a number between 0.23 or 1.5674 or 2.286 ... and 9.00017
// Truncate and only keep the 0, 1, 2, 3, ..., or 9
// Apply mod 3 to get remainders 0, 1, 2
// Add 1 to get results of only 1, 2, 3 for R, P, S
// So this method will produce a range of outputs, specifically 1, 2, 3
let compChoice = Math.trunc(Math.random*10)) % 3 + 1;

if (compChoice == 1) {
compChoice = "rock";
}
else if (compChoice == 2) {
compChoice = "paper";
}
else if (compChoice == 3) {
compChoice = "scissors";
}

if (yourChoice == "rock" && compChoice == "rock") {
return null;
}
else if (yourChoice == "rock" && compChoice == "scissors") {
return "you won";
}
else if (yourChoice == "rock" && compChoice == "paper") {
return "you lost";
}
else if (yourChoice == "scissors" && compChoice == "rock") {
return "you lost";
}
else if (yourChoice == "scissors" && compChoice == "paper") {
return "you won";
}
else if (yourChoice == "scissors" && compChoice == "scissors") {
return null;
}
else if (yourChoice == "paper" && compChoice == "rock") {
return "you won";
}
else if (yourChoice == "paper" && compChoice == "paper") {
return null;
}
else if (yourChoice == "paper" && compChoice == "scissors") {
return "you lost";
}

}