﻿ Python: Find the largest product of the pair of adjacent elements from a given list of integers - w3resource

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

## Python Basic - 1: Exercise-94 with Solution

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.
# 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:

Python Code Editor:

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