Looping Through Complexity: 36 Loop Problems to Practice Solving

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1. How many times does the following loop run?

i = 0
j = 1
while j >= 1 :
   print("" , i , ";" , j)
   i = j + 1
   if i % 2 == 0 :
      j = j - 1

2 times

1. Initialization:

• i is initialized to 0.
• j is initialized to 1.

2. Iteration 1:

• j is greater than or equal to 1, so the loop executes.
• The values of i and j are printed.
• i is updated to the value of j + 1, which is 2.
• Since i % 2 == 0 (2 is divisible by 2), j is decremented by 1, becoming 0.
• End of iteration.

3. Iteration 2:

• j is now 0, which is not greater than or equal to 1, so the loop terminates.

Therefore, the loop runs for 2 iterations.

2. What does the following code compute?

sum = 0
count = 0
value = input("enter an  integer")
while value > 0 :
   sum = sum + value
   count = count + 1
   value = input("enter next integer")
result = sum * 1.0 / count
print(result)

The code computes the average of all the positive…