Python: Check if first digit/character in each element in a given list is same or not
Check Common First Digit/Character
Write a Python program to check if the first digit or character of each element in a list is the same.
Visual Presentation:
Sample Solution:
Python Code:
# Define a function 'test' that checks if the first character (or digit) in each element of the given list is the same.
def test(lst):
# Use a generator expression with 'all' to check if the first character (or digit) of each element matches the first element.
result = all(str(x)[0] == str(lst[0])[0] for x in lst)
return result
# Define a list 'nums' containing integers.
nums = [1234, 122, 1984, 19372, 100]
# Print a message indicating the original list.
print("\nOriginal list:")
# Print the original list 'nums'.
print(nums)
# Print a message indicating the purpose of the following lines of code.
print("Check if the first digit in each element of the said given list is the same or not!")
# Call the 'test' function to check if the first digit in each element is the same and print the result.
print(test(nums))
# Define a new list 'nums' with different integer elements.
nums = [1234, 922, 1984, 19372, 100]
# Print a message indicating the original list.
print("\nOriginal list:")
# Print the new list 'nums'.
print(nums)
# Print a message indicating the purpose of the following lines of code.
print("Check if the first digit in each element of the said given list is the same or not!")
# Call the 'test' function again with the new list 'nums' and print the result.
print(test(nums))
# Define a list 'nums' containing string elements.
nums = ['aabc', 'abc', 'ab', 'a']
# Print a message indicating the original list.
print("\nOriginal list:")
# Print the original list 'nums'.
print(nums)
# Print a message indicating the purpose of the following lines of code.
print("Check if the first character in each element of the said given list is the same or not!")
# Call the 'test' function to check if the first character in each element is the same and print the result.
print(test(nums))
# Define a new list 'nums' with different string elements.
nums = ['aabc', 'abc', 'ab', 'ha']
# Print a message indicating the original list.
print("\nOriginal list:")
# Print the new list 'nums'.
print(nums)
# Print a message indicating the purpose of the following lines of code.
print("Check if the first character in each element of the said given list is the same or not!")
# Call the 'test' function again with the new list 'nums' and print the result.
print(test(nums))
Sample Output:
Original list: [1234, 122, 1984, 19372, 100] Check if first digit in each element of the said given list is same or not! True Original list: [1234, 922, 1984, 19372, 100] Check if first digit in each element of the said given list is same or not! False Original list: ['aabc', 'abc', 'ab', 'a'] Check if first character in each element of the said given list is same or not! True Original list: ['aabc', 'abc', 'ab', 'ha'] Check if first character in each element of the said given list is same or not! False
Flowchart:
Python Code Editor:
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