Final answer:
To count input length without spaces, periods, or commas, a program can iterate over each character in the string, incrementing a counter for each character that isn't a space, period, or comma. An example can be demonstrated using programming in Python.
Step-by-step explanation:
To count input length without spaces, periods, or commas, you will often need to write a computer program or use a built-in function in a programming language that processes a given string and counts only the relevant characters. The algorithm will typically iterate over each character in the string and increase a counter by one for each character that is not a space, period, or comma.
As an example, in Python, you could implement this with the following code snippet:
input_string = "Your input string here."
count = 0
for char in input_string:
if char not in [' ', '.', ',']:
count += 1
print("The length without spaces, periods, or commas is:", count)
This piece of code assigns the input string to a variable, initializes a count variable at zero, then loops over each character, checking if it is not a space, period, or comma before adding to the count. The final count is then printed out.