# Python: Sort a given matrix in ascending order according to the sum of its rows

## Python List: Exercise - 101 with Solution

Write a Python program to sort a given matrix in ascending order according to the sum of its rows.

**Visual Presentation: **

**Sample Solution:**

**Python Code:**

```
# Define a function 'sort_matrix' that sorts a matrix in ascending order based on the sum of its rows
def sort_matrix(M):
# Use the 'sorted' function to sort the matrix 'M' based on the sum of each row
result = sorted(M, key=sum)
return result
# Create two matrices 'matrix1' and 'matrix2'
matrix1 = [[1, 2, 3], [2, 4, 5], [1, 1, 1]]
matrix2 = [[1, 2, 3], [-2, 4, -5], [1, -1, 1]]
# Print a message indicating the original matrix
print("Original Matrix:")
# Print the contents of 'matrix1'
print(matrix1)
# Print a message indicating the matrix will be sorted in ascending order based on row sums
print("\nSort the said matrix in ascending order according to the sum of its rows")
# Call the 'sort_matrix' function with 'matrix1' and print the result
print(sort_matrix(matrix1))
# Print a message indicating the original matrix
print("\nOriginal Matrix:")
# Print the contents of 'matrix2'
print(matrix2)
# Print a message indicating the matrix will be sorted in ascending order based on row sums
print("\nSort the said matrix in ascending order according to the sum of its rows")
# Call the 'sort_matrix' function with 'matrix2' and print the result
print(sort_matrix(matrix2))
```

Sample Output:

Original Matrix: [[1, 2, 3], [2, 4, 5], [1, 1, 1]] Sort the said matrix in ascending order according to the sum of its rows [[1, 1, 1], [1, 2, 3], [2, 4, 5]] Original Matrix: [[1, 2, 3], [-2, 4, -5], [1, -1, 1]] Sort the said matrix in ascending order according to the sum of its rows [[-2, 4, -5], [1, -1, 1], [1, 2, 3]]

**Flowchart:**

**Python Code Editor:**

**Previous:** Write a Python program to extract common index elements from more than one given list.

**Next:** Write a Python program to extract specified size of strings from a give list of string values.

**What is the difficulty level of this exercise?**

Test your Programming skills with w3resource's quiz.

**Weekly Trends**- 100 Python Projects for Beginners with solution
- Mastering NumPy: 100 Exercises with solutions
- SQL Tutorial
- SQL Inner Join
- Python Exercises, Practice, Solution
- Python Interview Questions and Answers: Comprehensive Guide
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript HTML Form Validation
- Java Collection Exercises