Returns the modified list. So, we can take the max of the sum of squares of all pairs. Write a function that takes an integer n that is greater than 1 and returns the largest integer that is smaller than n and evenly divides n. If you are having a hard time identifying how the if statement and if function differ, first try to get them to print out different values. Using the mutable rlist abstraction, implement a destructive filter function: In both cases, do not create any new lists no list displays, generators, applications of list , etc.

These are destructive operations.: Consider now an extension of rlist to make it mutable:. The number of x’s in each row must be equal. Other empty cells remain empty. The Python class Life in the hw5. Riffle shuffling combines two sequences by interleaving themalternately including one item from one sequence and one from the next. Despite the doctests above, this function actually does not do the same thing as an if statement in all cases.

If you are having a cs661a time identifying how the if statement and if function differ, first try to get them to print out different values. In both cases, do not create any new lists no list displays, generators, applications of listetc.

# Homework 1 Solutions | CS 61A Summer

Using the mutable rlist abstraction, implement a destructive filter function: Write two functions that reverse the contents of a list as a side effect. Write a function that takes an integer n that is greater hojework 1 and returns the largest integer that is smaller than n and evenly divides n.

The resulting list starts with the first item of R, then the middle item, homeeork the second item, then the item after the middle, etc.

Homewok the modified list. The terms “destructive” and “nondestructive” describe the effects of an operation on the states of the objects that provide input. Mutable Rlists Rlists as presented so far are immutable.

Destructive and Nondestructive Operations. In the first one, use only assignments to individual list elements do not use slicing. The max function can take an arbitrary number of arguments.

Riffle shuffling combines two sequences by interleaving themalternately including one item from one sequence and one from the next.

These are destructive operations Write a function that takes three positive numbers and returns the sum of the squares of the two largest numbers. This sequence of values of n is often called a Hailstone sequence, Write a function that takes a single argument with formal parameter name nprints out the hailstone sequence starting at nand returns the number of steps in the sequence:. The resulting list starts with the first item of the original R, then the middle item, then the second item, then the item after the middle, etc.

Despite the doctests above, this function actually does not do the same thing as an if statement in all cases.

So, we can take the max of the sum of squares of all pairs. Using ordinary Python lists, implement a nondestructive shuffle. With a nondestructive operation, the original input values cs61aa remain intact.

At the beginning of each turn, organisms in occupied cells die and organisms are born into unoccupied cells according to the following rules: Fill in the advance operation to make it work.

Iterating from n-1 to 1, we return the first integer that evenly divides n. If a cell was occupied in the previous turn, and two or three of its eight homewprk cells were occupied, the cell remains occupied. Use only a single line for the body of the function. Variations of the game treat the edges of the board in various ways: As in lecture, an account will be represented as a function: Analogously, a hailstone travels up and down in the atmosphere before eventually landing on earth.

## CS61A Homework 05

Other empty cells remain empty. As in lecture, an account will be represented as a function:.

While you’re at it, make sure you understand how the parts we’ve already implemented work! We will homweork with the surrounded-by-desert option. Leading and trailing whitespace is ignored. The answer is short, and doesn’t even need a loop