TaskWrite a program that reads as many as 1,000 integer values, and counts the frequency of each value in the input.Sample outputThere are no tabs in the output.Enter as many as 1000 values, ^D to end1 3 4 6 4 3 6 10 3 5 4 3 1 6 4 3 117 values read into arrayValue Freq 1 3 3 5 4 4 5 1 6 3 10 1
Question
TaskWrite a program that reads as many as 1,000 integer values, and counts the frequency of each value in the input.Sample outputThere are no tabs in the output.Enter as many as 1000 values, ^D to end1 3 4 6 4 3 6 10 3 5 4 3 1 6 4 3 117 values read into arrayValue Freq 1 3 3 5 4 4 5 1 6 3 10 1
Solution
Here is a Python program that accomplishes this task:
from collections import Counter
def count_frequency():
print("Enter as many as 1000 values, ^D to end")
values = []
while True:
try:
values.append(int(input()))
except EOFError:
break
except ValueError:
print("Invalid input. Please enter an integer.")
print(f"{len(values)} values read into array")
counter = Counter(values)
print("Value Freq")
for value, freq in counter.items():
print(f" {value} {freq}")
count_frequency()
This program uses a while loop to continuously read integer inputs from the user until the user enters ^D (EOF). It stores these inputs in a list. If the user enters something that is not an integer, it prints an error message and continues to the next iteration of the loop.
After the loop, it counts the frequency of each value in the list using the Counter class from the collections module. It then prints the number of values read and the frequency of each value.
Please note that ^D (EOF) might not work in some environments like Windows command prompt. In such cases, you can use ^Z instead. Also, this program is designed to be run in a console or terminal, not in a Jupyter notebook or other interactive Python environment.
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