Check if the first and last number of a list is the same

In Python, validating whether the first and last numbers of a list are equal can be accomplished by comparing the first element (index 0) with the last element (index -1) of the list. This straightforward method uses the indexing feature of Python lists to efficiently perform the comparison. Here is an example:

lst = [1, 2, 3, 4, 5] if lst[0] == lst[-1]: print("The first and last numbers are the same.") else: print("The first and last numbers are not the same.")
//output: The first and last numbers are not the same.

In this example, the first number is 1 and the last number is 5, so the output will be "The first and last numbers are not the same."

Python List


Python list first and last

In Python, lists are an essential built-in data type that enables the storage of multiple items in a single variable. These ordered collections can accommodate various data types, such as numbers, strings, and even other lists. To create a list, you simply enclose the items within square brackets [ ] and separate them using commas. Here is an example of a list:

lst = [1, 2, 3, 4, 5]

Python if...else

The if...else statement is a fundamental control structure in programming that governs the program's flow based on a specific condition. When encountering an if statement, the program assesses the given condition, and if it holds true, the subsequent code block associated with the if statement is executed. However, in the event that the condition evaluates to false, the code block following the else statement is executed, allowing for alternative paths in program execution.

Example:
x = 5 if x > 0: print("x is positive") else: print("x is non-positive")
//Output: x is positive

Conclusion

To verify whether the first and last numbers of a list are identical, you can compare the elements at index 0 and index -1 of the list. This straightforward comparison provides a simple way to determine if the first and last elements match in Python.






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