Iteration Homework
An intro to data abstraction
Homework Assignment: for Loop Challenge
Task: Create a program that does the following:
Initialize an array with the names of five of your favorite movies. Use a for loop to iterate through the array and print each movie name to the console. After printing all movie names, print a message indicating how many movies you listed.
Homework
Create a 3 by 3, 2D list that represents a tictactoe board. Use “X” for X, “O” for O, and None for empty tiles.
Ex. board = [[“X”,”None”,”O”],
[“X”,”O”,”None”],
[“O”,”None”,”X”]]
Iterate over the board and identify whether it is player X’s or player O’s turn.
Hint: count the number of moves(non-None). (X goes first)
Optional: use console.error() to report an error if the board is illegal (ex. 7 “X”s and 2 “O”s)
%%js
let board = [
["X", "None", "O"],
["X", "O", "None"],
["O", "None", "X"]
];
function countMoves(symbol) {
let count = 0;
for (let row of board) {
for (let cell of row) {
if (cell === symbol) {
count++;
}
}
}
return count;
}
function determineTurn() {
let xCount = countMoves("X");
let oCount = countMoves("O");
if (xCount < oCount || xCount > oCount + 1) {
console.error("Error: Invalid board state. The number of 'X' and 'O' moves is incorrect.");
return;
}
if (xCount === oCount) {
console.log("It's Player X's turn.");
} else if (xCount > oCount) {
console.log("It's Player O's turn.");
}
}
determineTurn();
let outerFactor = 1;
while (outerFactor <= 10) {
let innerFactor = 1;
let rowOutput = "";
while (innerFactor <= 10) {
let product = outerFactor * innerFactor;
rowOutput += product + "\t";
innerFactor++;
}
console.log(rowOutput);
outerFactor++;
}
<IPython.core.display.Javascript object>
H.W application of While Loops.
Create the Outer Loop:
Use a while loop that runs while outerFactor is less than or equal to 10. Initialize the Inner Loop Variable:
Inside the outer loop, create another variable called innerFactor and set it to 1. Create the Inner Loop:
Inside the outer loop, use another while loop that runs while innerFactor is less than or equal to 10. Calculate the Product:
Inside the inner loop, calculate the product of outerFactor and innerFactor. Print the Product:
Print the product using console.log(), formatting the output neatly. Increment the Inner Loop Variable:
After printing the product, increment innerFactor by 1. Move to the Next Line:
After the inner loop finishes, print a new line to separate rows. Increment the Outer Loop Variable:
Increment outerFactor by 1 to move to the next row in the table.