Low-power Embedded Game
10 Points
tuples
Instructions
You are working on a game targeting a low-power embedded system and need to write several convenience traits which will be used by other parts of the game.
1. Calculate the quotient and remainder of a division
A quotient is the output of a division.
fn divmod(self: @u16, divisor: u16) -> (u16, u16)Example:
let dividend: u16 = 10;
assert_eq!(dividend.divmod(3), (3, 1));2. Choose even-positioned items from an array
This will be helpful to enable a screen-buffer optimization, your boss promises.
trait EvensTrait<T> {
fn evens(self: @Array<T>) -> Array<T>;
}Examples:
let arr: Array<u16> = array![0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
assert_eq!(arr.evens(), array![0, 2, 4, 6, 8]);let arr: Array<u16> = array![1, 2, 3, 4, 5, 6, 7, 8, 9];
assert_eq!(arr.evens(), array![1, 3, 5, 7, 9]);3. Calculate the manhattan distance of a position from the origin
For mapping convenience, you have a tuple type Position:
type Position = (i16, i16);You need to implement a method manhattan on Position which returns the
manhattan distance of that position from the origin (let p: Position = (0, 0)).
trait PositionTrait {
fn manhattan(self: @Position) -> i16
}Example:
let p: Position = (3, 4);
assert_eq!(p.manhattan(), 7);Low-power Embedded Game
10 Points
tuples
Instructions
You are working on a game targeting a low-power embedded system and need to write several convenience traits which will be used by other parts of the game.
1. Calculate the quotient and remainder of a division
A quotient is the output of a division.
fn divmod(self: @u16, divisor: u16) -> (u16, u16)Example:
let dividend: u16 = 10;
assert_eq!(dividend.divmod(3), (3, 1));2. Choose even-positioned items from an array
This will be helpful to enable a screen-buffer optimization, your boss promises.
trait EvensTrait<T> {
fn evens(self: @Array<T>) -> Array<T>;
}Examples:
let arr: Array<u16> = array![0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
assert_eq!(arr.evens(), array![0, 2, 4, 6, 8]);let arr: Array<u16> = array![1, 2, 3, 4, 5, 6, 7, 8, 9];
assert_eq!(arr.evens(), array![1, 3, 5, 7, 9]);3. Calculate the manhattan distance of a position from the origin
For mapping convenience, you have a tuple type Position:
type Position = (i16, i16);You need to implement a method manhattan on Position which returns the
manhattan distance of that position from the origin (let p: Position = (0, 0)).
trait PositionTrait {
fn manhattan(self: @Position) -> i16
}Example:
let p: Position = (3, 4);
assert_eq!(p.manhattan(), 7);