Question:(You could use stack to solve the problem) Suppose you have to evaluate an expression like A*B*C*D*E where A,B,C,D and E are matrices. Since matrix multiplication is associative, the order in which multiplications are performed is arbitrary. However, the number of elementary multiplications needed strongly depends...
Question： Continue to program the code we made in the class at the bottom of this page. Try to use for loop to create buttons from 1-9, so the tkinter window would display as below: Hint: You can use “for i in range(1, 10):” or “for i in ‘123456789’:” to build these 9 buttons,...
You can do Question 1~ 3 in Python IDLE: Question 1. Use float() to create a number from a string like ‘12.34’. Make sure the result is really a number! Question 2. Try using int() to create an integer from a decimal number like 56.78. Did the answer get rounded up...
Question： Write a program to ask the user for five names. The program should store the names in a list, and print them all out at the end. It should look something like this: Sample input： Enter 5 names: Tony Paul Nick Michel Kevin Sample output： The names are Tony, Paul, Nick, Michel, Kevin Hint: You can use...
Question: Given the list of student marks: marks = [62, 84, 74, 51, 98, 73, 77, 90, 85, 79, 65, 58, 74, 86] Write a function that takes in a list of arguments and then returns a list containing marks which are above average. Name the function whatever you like...
Question 1: We have a list of following: zoo = ['monkeys', 'tigers', 'pandas', 'penguins', 'giraffes', 'hippos', 'bears'] how to retrieve a slice of list zoo, so you can get the following result? ['monkeys', 'pandas', 'giraffes', 'bears'] Question 2: from the same list of zoo in the question 1, how to retrieve...