In the previous article, we have discussed Python Program to Print Triangular Number series 1 3 6 10 15 …N

Given a matrix and the task is to find the square of each element in the given matrix in Python.

**What is a matrix:**

A matrix is a rectangular sequence of numbers divided into columns and rows. A matrix element or entry is a number that appears in a matrix.

**Example:**

Above is the matrix which contains 5 rows and 4 columns and having elements from 1 to 20.

In this order, the dimensions of a matrix indicate the number of rows and columns.

Here as there are 5 rows and 4 columns it is called a 5*4 matrix.

**Examples:**

**Example1:**

**Input:**

Given Matrix : 5 3 2 6 1 5 4 8 2 7 5 8

**Output:**

The Square of all elements of the given matrix is : 25 9 4 36 1 25 16 64 4 49 25 64

**Example2:**

**Input:**

Given Matrix : 1 2 3 6 5 4 7 8 0

**Output:**

The Square of all elements of the given matrix is : 1 4 9 36 25 16 49 64 0

## Program to Find Square of a Matrix in Python

Below are the ways to find the square of each element in the given matrix in Python:

### Method #1: Using For Loop (Static Input)

**Approach:**

- Give the matrix as static input and store it in a variable.
- Calculate the number of rows of the given matrix by calculating the length of the nested list using the len() function and store it in a variable mtrxrows.
- Calculate the number of columns of the given matrix by calculating the length of the first list in the nested list using the len() function and store it in a variable mtrxcolums.
- Loop till the given number of rows using the For loop.
- Inside the For loop, Iterate till the given number of columns using another Nested For loop(Inner For loop).
- Print the square of the given element of the matrix by printing
**gvnmatrix[n][m]*gvnmatrix[n][m]**value where n is the iterator value of the parent For loop and m is the iterator value of the inner For loop. - The Exit of the Program.

**Below is the implementation:**

# Give the matrix as static input and store it in a variable. mtrx = [[5, 3, 2], [6, 1, 5], [4, 8, 2], [7, 5, 8]] # Calculate the number of rows of the given matrix by # calculating the length of the nested list using the len() function # and store it in a variable mtrxrows. mtrxrows = len(mtrx) # Calculate the number of columns of the given matrix by # calculating the length of the first list in the nested list # using the len() function and store it in a variable mtrxcols. mtrxcols = len(mtrx[0]) print("The Square of all elements of the given matrix is :") # To print all the elements of the given matrix. # Loop till the given number of rows using the For loop. for n in range(mtrxrows): # Inside the For loop, Iterate till the given number of columns using another # Nested For loop(Inner For loop). for m in range(mtrxcols): # Print the square of the given element of the matrix by printing gvnmatrix[n][m]*gvnmatrix[n][m] # value where n is the iterator value of the parent For loop and m is the iterator value # of the inner For loop. print(mtrx[n][m]*mtrx[n][m], end=' ') print()

**Output:**

The Square of all elements of the given matrix is : 25 9 4 36 1 25 16 64 4 49 25 64

### Method #2: Using For loop (User Input)

**Approach:**

- Give the number of rows of the matrix as user input using the int(input()) function and store it in a variable.
- Give the number of columns of the matrix as user input using the int(input()) function and store it in another variable.
- Take a list and initialize it with an empty value using [] or list() to say
**gvnmatrix**. - Loop till the given number of rows using the For loop
- Inside the For loop, Give all the row elements of the given Matrix as a list using the list(),map(),int(),split() functions and store it in a variable.
- Add the above row elements list to
**gvnmatrix**using the append() function. - To print all the elements of the given matrix.
- Loop till the given number of rows using the For loop.
- Inside the For loop, Iterate till the given number of columns using another Nested For loop(Inner For loop).
- Print the square of the given element of the matrix by printing
**gvnmatrix[n][m]*gvnmatrix[n][m]**value where n is the iterator value of the parent For loop and m is the iterator value of the inner For loop. - The Exit of the Program.

**Below is the implementation:**

# Give the number of rows of the matrix as user input using the int(input()) function # and store it in a variable. mtrxrows = int(input('Enter some random number of rows of the matrix = ')) # Give the number of columns of the matrix as user input using the int(input()) function # and store it in another variable. mtrxcols = int(input('Enter some random number of columns of the matrix = ')) # Take a list and initialize it with an empty value using [] or list() to say gvnmatrix. mtrx = [] # Loop till the given number of rows using the For loop for n in range(mtrxrows): # Inside the For loop, Give all the row elements of the given Matrix as a list using # the list(),map(),int(),split() functions and store it in a variable. l = list(map(int, input( 'Enter {'+str(mtrxcols)+'} elements of row {'+str(n+1)+'} separated by spaces = ').split())) # Add the above row elements list to gvnmatrix using the append() function. mtrx.append(l) print("The Square of all elements of the given matrix is :") # To print all the elements of the given matrix. # Loop till the given number of rows using the For loop. for n in range(mtrxrows): # Inside the For loop, Iterate till the given number of columns using another # Nested For loop(Inner For loop). for m in range(mtrxcols): # Print the square of the given element of the matrix by printing gvnmatrix[n][m]*gvnmatrix[n][m] # value where n is the iterator value of the parent For loop and m is the iterator value # of the inner For loop. print(mtrx[n][m]*mtrx[n][m], end=' ') print()

**Output:**

Enter some random number of rows of the matrix = 3 Enter some random number of columns of the matrix = 3 Enter {3} elements of row {1} separated by spaces = 1 2 3 Enter {3} elements of row {2} separated by spaces = 6 5 4 Enter {3} elements of row {3} separated by spaces = 7 8 0 The Square of all elements of the given matrix is : 1 4 9 36 25 16 49 64 0

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