“Algorithme de base 13” Réponses codées

Algorithme de base 13

1.

Print 1-255 Write a program that would print all the numbers from 1 to 255.
Solution:
i = 0
while i < 256:
print(i)
i += 1

2.

Print odd numbers between 1-255 Write a program that would print all the odd numbers from 1 to 255.

Solution:
i = 0
while i < 256:
if i % 2 != 0:
print(i)
i += 1

3.

Print the sum of all numbers from 1 to 255.5.
Solution:
i = 0
sum = 0
while i < 256:
sum += i
i += 1
print(sum)

4.

Given an array, Example: [1,3,5,7,9,13], write a program that would iterate through each member of the array and print each value.

Solution:
array = [1,3,5,7,9,13]
for num in array:
print(num)

5.

Write a program that takes any array and prints the maximum value in the array.
Solution:
array = [1,3,5,16,9,13]
maxValue = array[0]
for num in range(1,len(array)):
if array[num] > maxValue:
maxValue = array[num]
print(maxValue)

6.

Write a program that takes an array, and prints the AVERAGE of the values in the array. For example for an array [2, 10, 3], your program should print an average of 5.
array = [2, 10, 3]
Solution:
sum = 0
for num in range(len(array)):
sum += array[num]
avg = sum/len(array)
print(avg)

7.

Write a program that creates an array that contains all the even numbers between 1 to 255.
Solution:
array = []
i = 0
while i < 256:
if i % 2 == 0:
array.append(i)
vi += 1
print(array)

8.

Write a program that takes an array and a number 'y' and returns the values in the array that are greater than a given 'y'.
Solution:
def valuesGreaterThan(array, y):
for x in array:
if x > y:
print(x)
valuesGreaterThan([2,2,8,4,1,78], 3)

9.

Given any array x, say [1, 5, 10, -2], create an algorithm that squares each value in the array. Output: [1, 25, 100, 4].
Solution:
arraySquared = []
def squareValues(array):
for x in array:
arraySquared.append(x*x)
print(arraySquared)
squareValues([2,2,8,4,1,78])

10.

Given any array x, say [1, 5, 10, -2], create an algorithm that replaces any negative number with the value of 0.
Solution:
updatedArray = []
def replaceNeg(array):
for x in array:
if x < 0:
x = 0
updatedArray.append(x)
print(updatedArray)
replaceNeg([2,-2,8,4,1,-78])

11.

Given any array x, say [1, 5, 10, -2], create an algorithm that returns a hash with the maximum value, the minimum value, and the average of all values in the array.
Solution:
values = {"min": 0, "max": 0, "avg": 0}
def minMaxAvg(array):
sum =  0
for x in array:
if x < values["min"]:
values["min"] = x
if x > values["max"]:
values["max"] = x
sum += x
values["avg"] = sum/len(array)
print(values)
minMaxAvg([1, 5, 10, -2])

12.

Given any array x, say [1, 5, 10, 7, -2], create an algorithm that shifts each number by one to the front. For example, when the program is done, the array [1, 5, 10, 7, -2] should become [5, 10, 7, -2, 0].
Solution:
def minMaxAvg(array):
for x in range(1, len(array)):
array[x-1] = array[x]
array[len(array)-1] = 0
print(array)
minMaxAvg([1, 5, 10, 7, -2])

13.

Write a program that takes an array of numbers and replaces any negative number with the string 'Negative'. For example, if array x is initially [-1, -3, 2] after your program is done that array should be ['Negative', 'Negative', 2].
Solution:
def replaceNegWithString(array):
for x in range(len(array)):
if array[x] < 0:
array[x] = 'Negative'
print(array)
replaceNegWithString([-1,-2,3,4,12])