Search and find operations in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to find the index of the number 7 in the list.

Intro to Computing

numbers = [3, 7, 1, 9]
index = numbers.[1](7)
print(index)

Drag options to blanks, or click blank then click option'

Aindex

Bfind

Csearch

Dlocate

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method that doesn't exist like 'find' or 'search'.

Confusing the method with one that returns True/False.

The index() method returns the position of the first occurrence of the value.

2fill in blank

medium

Complete the code to check if the word 'apple' is in the list.

Intro to Computing

fruits = ['banana', 'apple', 'cherry']
if 'apple' [1] fruits:
    print('Found it!')

Drag options to blanks, or click blank then click option'

Ainside

Bon

Cat

Din

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'on' or 'at' which are not valid Python keywords for membership.

Trying to use a method instead of a keyword.

The keyword in checks if an item exists in a list.

3fill in blank

hard

Fix the error in the code to find the position of 5 in the list.

Intro to Computing

values = [2, 4, 5, 6]
position = values.[1](5)
print(position)

Drag options to blanks, or click blank then click option'

Afind

Bsearch

Cindex

Dlocate

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent methods like 'find' or 'search'.

Confusing with string methods.

The correct method to find the index of an element in a list is index().

4fill in blank

hard

Fill both blanks to create a dictionary of word lengths for words longer than 3 letters.

Intro to Computing

words = ['cat', 'house', 'tree', 'a']
lengths = {word: [1] for word in words if len(word) [2] 3}

Drag options to blanks, or click blank then click option'

Alen(word)

B>

C<

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word itself instead of its length.

Using '<' instead of '>' in the condition.

Use len(word) to get the length and > to filter words longer than 3 letters.

5fill in blank

hard

Fill all three blanks to create a dictionary of uppercase words and their lengths for words longer than 2 letters.

Intro to Computing

words = ['dog', 'cat', 'a', 'bird']
result = { [1]: [2] for w in words if len(w) [3] 2 }

Drag options to blanks, or click blank then click option'

Aw.upper()

Blen(w)

C>

Dw

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word itself instead of uppercase for keys.

Using '<' instead of '>' in the condition.

Mixing variable names.

Use w.upper() for uppercase keys, len(w) for values, and > to filter words longer than 2 letters.