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1. 3,4,5,6A represent it in array 

code:- 

array = [3, 4, 5, "6A"]

for element in array:

    print(element)

2. show * in array 

code:-

 #include <stdio.h>

int main() {

    int array[] = { 1, 2, 3, 42};

    printf("%d\n", array[0]);

    printf("%d\n", array[1]);

    printf("%d\n", array[2]);

    printf("%c\n", array[3]);

    return 0;

}

3. Calculate the no. of numerical digits in a string.

code:- 

string = "Madhav 9034, I have 34 Rubbe4."

count = 0

for char in string:

    if char.isdigit():

        count = count + 1

print("Number of numerical digits:", count)

or  

def count_digits(input_string):

    count = sum(1 for char in input_string if char.isdigit())

    return count

if __name__ == "__main__":

    user_input = input("Enter a string: ")

    digit_count = count_digits(user_input)

    print(f"The number of numerical digits in the string is: {digit_count}")

4. Make a neuron which takes data as an input and check with a speific array of data on behalf of that give the output

code:- 

def neuron(input_data):

    predefined_data = [10, 20, 30, 40, 50]

    

    if input_data in predefined_data:

        return "Match found!"

    else:

        return "No match found"

input_data = 20

output = neuron(input_data)

print("Output:", output)

5. Write a program to move a number at an empty slot in an array {2,4,3,{},7}

code:- 

array = [2, 4, 3, '{}', 7]

number_to_move = 5

array[array.index('{}')] = number_to_move

print("Updated array:", array)

6. Write a program to move a number at an empty slot in an array 

code:-

array = [2, 4, 3, None, 7]

number_to_move = 5

array[array.index(None)] = number_to_move

print("Updated array:", array)

7. Write a program to implement sigmoid function

code:-

import math

def sigmoid(x):

    return 1 / (1 + math.exp(-x))

x = 0.5

result = sigmoid(x)

print("Sigmoid result:", result) 

8. ambiguious calculator

code :-

def ambiguous_calculator(expression):

    try:

        result = eval(expression)

        return result

    except Exception as e:

        return "Invalid expression or ambiguity detected."

input_expression = input("Enter a mathematical expression: ")

output = ambiguous_calculator(input_expression)

print("Result:", output)

9. simple calculator

code:-

def calculator():

    num1 = float(input("Enter first number: "))

    operator = input("Enter operator (+, -, *, /): ")

    num2 = float(input("Enter second number: "))

    if operator == "+":

        return num1 + num2

    elif operator == "-":

        return num1 - num2

    elif operator == "*":

        return num1 * num2

    elif operator == "/":

        return num1 / num2

    else:

        return "Invalid operator"

result = calculator()

print("Result:", result)