Python: Find the largest product of the pair of adjacent elements from a given list of integers

Last update on May 24 2025 10:49:14 (UTC/GMT +8 hours)

Largest Adjacent Product

Write a Python program to find the largest product of a pair of adjacent elements from a given list of integers.

Sample Solution:

Python Code:

# Define a function named adjacent_num_product that takes a list of numbers (list_nums) as an argument.
def adjacent_num_product(list_nums):
    # Use a generator expression with zip to calculate the product of adjacent elements.
    # The expression max(a*b for a, b in zip(list_nums, list_nums[1:])) finds the maximum product of adjacent elements.
    return max(a * b for a, b in zip(list_nums, list_nums[1:]))

# Test the function with different lists of numbers and print the results.

# Test case 1
nums = [1, 2, 3, 4, 5, 6]
# Print the original list of numbers.
print("Original list: ", nums)
# Print the largest product of adjacent elements in the list.
print("Largest product of the pair of adjacent elements of the said list:", adjacent_num_product(nums))

# Test case 2
nums = [1, 2, 3, 4, 5]
# Print the original list of numbers.
print("\nOriginal list: ", nums)
# Print the largest product of adjacent elements in the list.
print("Largest product of the pair of adjacent elements of the said list:", adjacent_num_product(nums))

# Test case 3
nums = [2, 3]
# Print the original list of numbers.
print("\nOriginal list: ", nums)
# Print the largest product of adjacent elements in the list.
print("Largest product of the pair of adjacent elements of the said list:", adjacent_num_product(nums))

Sample Output:

Original list:  [1, 2, 3, 4, 5, 6]
Largest product of the pair of adjacent elements of the said list: 30

Original list:  [1, 2, 3, 4, 5]
Largest product of the pair of adjacent elements of the said list: 20

Original list:  [2, 3]
Largest product of the pair of adjacent elements of the said list: 6

Explanation:

Here is a breakdown of the above Python code:

• Function definition:
• The code defines a function named "adjacent_num_product()" that takes a list of numbers (list_nums) as an argument.
• Generator Expression:
• The function uses a generator expression with 'zip' to calculate the product of adjacent elements in the input list.
• Max Function:
• The max(a * b for a, b in zip(list_nums, list_nums[1:])) expression finds the maximum product of adjacent elements in the list.
• Test cases:
• The function is tested with different lists of numbers using print(adjacent_num_product(...)).

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to find the largest product of any two adjacent numbers in a list.
• Write a Python program to compute the maximum product obtained from pairs of consecutive elements in an array.
• Write a Python program to iterate through a list, calculate products of adjacent numbers, and return the highest product.
• Write a Python program to determine which adjacent pair in an array produces the largest multiplication result.

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Python Code Editor:

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