Python: Check whether a specified value is contained in a group of values

Last update on December 21 2024 07:22:27 (UTC/GMT +8 hours)

Value in Group Tester

Write a Python program that checks whether a specified value is contained within a group of values.

Test Data:
3 -> [1, 5, 8, 3] : True
-1 -> [1, 5, 8, 3] : False

Pictorial Presentation:

Sample Solution-1:

Python Code:

# Define a function called is_group_member that takes two parameters: group_data (a list) and n (an integer).
def is_group_member(group_data, n):
    # Iterate through the elements (values) in the group_data list.
    for value in group_data:
        # Check if the current value is equal to the given integer, n.
        if n == value:
            return True  # If found, return True.
    return False  # If the loop completes and no match is found, return False.

# Call the is_group_member function with two different lists and integers, and print the results.
print(is_group_member([1, 5, 8, 3], 3))  # Output: True (3 is in the list)
print(is_group_member([5, 8, 3], -1))    # Output: False (-1 is not in the list)

Sample Output:

True
False

Explanation:

The said code defines a function called "is_group_member" that takes two arguments "group_data" a list and an integer "n". First, the function declares a for loop to iterate through each element in the "group_data" list. When the current element (value) value matches the value of "n", it returns True, which means the input integer is present in the "group_data" list. The function returns False if the for loop fails to find a match, meaning the input integer does not exist in "group_data".

In the last two lines the code call the function "is_group_member" twice, with the input values ([1, 5, 8, 3], 3) and ([5, 8, 3], -1) and print the results.

In the first case, False will be returned, while in the second case, True will be returned.

Flowchart:

Sample Solution-2:

Python Code:

# Define a function called is_group_member that takes two parameters: group_data (a list) and n (an integer).
def is_group_member(group_data, n):
    return n in group_data  # Check if n is in the group_data list and return the result.

# Call the is_group_member function with two different lists and integers and print the results.
print(is_group_member([1, 5, 8, 3], 3))  # Output: True (3 is in the list)
print(is_group_member([5, 8, 3], -1))    # Output: False (-1 is not in the list)

Sample Output:

True
False

Explanation:

The said code defines a function called "is_group_member" which takes two parameters: "group_data", a list and "n", an integer. Within the function, it uses the "in" operator to check if the variable "n" is present in the "group_data" passed as an argument. If it is present, the function returns true, otherwise false.

The code then calls the function twice, passing two different arguments, ([1, 5, 8, 3], 3) and ([5, 8, 3], -1) and print the results.

It prints the output of the function which is True and False respectively.

Flowchart:

Python Code Editor:

Previous: Write a Python program to test whether a passed letter is a vowel or not.
Next: Write a Python program to create a histogram from a given list of integers.