Python program to concatenate two integer values ​​into one

Integer is a data type in Python that represents an integer without any decimal or fractional part. In Python, integers are a built-in data type that can be used to perform arithmetic operations, store numeric values, and represent counts, indices, or other discrete quantities.

Integers in Python have a wide range of applications, including mathematical calculations, indexing and slicing sequences (such as lists, strings), and controlling loops and iterations. They provide the basic building blocks for numerical computation and algorithm implementation in Python. Below is an example of integers in Python.

x = 5
y = -10
z = 0

In the above example, x, y, and z are variables assigned integer values. The value of x is 5, y is -10, and z is 0.

In this article, we will cover the different ways to concatenate two integers into one in Python.

Use str() function and string concatenation

In this method, we use str() function to convert two integers into strings. We then use string concatenation to concatenate the two strings together. Finally, we use the int() function to convert the resulting connection string back to an integer.

Example

The following is an example of concatenating two integers 123 and 456 into one.

def concatenate_integers(a, b):
   concatenated = str(a) + str(b)
   return int(concatenated)
num1 = 123
num2 = 456
concatenated_num = concatenate_integers(num1, num2)
print("The concatenate integers output:",concatenated_num)

Output

The concatenate integers output: 123456

Use string format

In this method, we concatenate two integers into a string using string format. {} placeholders in the format string are replaced with the values ​​of a and b. Finally, we convert the concatenated strings back to integers.

Example

The following is a sample code to concatenate two integers 678 and 890 into one.

def concatenate_integers(a, b):
   concatenated = "{}{}".format(a, b)
   return int(concatenated)
num1 = 678
num2 = 890
concatenated_num = concatenate_integers(num1, num2)
print("The concatenate integers output:",concatenated_num)

Output

The concatenate integers output: 678890

Use multiplication operator

In this method, we determine the multiplier by repeatedly multiplying by 10 until it is greater than b. We then multiply a by the multiplier to move its number to the left, and add b to connect the two numbers together.

Example

def concatenate_integers(a, b):
   multiplier = 1
   while multiplier <= b:
      multiplier *= 10
   concatenated = a * multiplier + b
   return concatenated
num1 = 123
num2 = 456
concatenated_num = concatenate_integers(num1, num2)
print("The concatenate integers output:",concatenated_num)

Output

The concatenate integers output: 123456

Use math.log10() function

In this method, we calculate the number of digits in b using the base 10 logarithm math.log10() function. We then raise the number of bits in b to the power 10 to get the multiplier. Finally, we multiply a by the multiplier and then add b to join the two numbers together.

Example

import math
def concatenate_integers(a, b):
   num_digits_b = math.floor(math.log10(b)) + 1
   multiplier = 10 ** num_digits_b
   concatenated = a * multiplier + b
   return concatenated
num1 = 123
num2 = 456
concatenated_num = concatenate_integers(num1, num2)
print("The concatenate integers output:",concatenated_num)

Output

The concatenate integers output: 123456

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