Program to display a lower triangular matrix

Problem Statement:- Program to display a lower triangular matrix.

Sample Input/Output:-


Sample Input First:3 3

7 8 3 5 2 1 4 2 1

Sample Output First: 

7 0 0 5 2 0 4 2 1

Sample Input Second: 2 2

7 8 9 6

Sample Output Second: 

7 0 9 6


Data requirement:-


  Input Data:- row_size, col_size, matrix[][]


  Output Data:-matrix[][], 0


  Additional Data:- i, j


Program in C

Here is the source code of the C Program to display a lower triangular matrix.


Code:


#include<stdio.h> int main() { int row_size,col_size; //Get size of matrix printf("Enter the row Size Of the Matrix:"); scanf("%d",&row_size); printf("Enter the columns Size Of the Matrix:"); scanf("%d",&col_size); int matrix[row_size][col_size]; //Taking input of the matrix int i,j; printf("Enter the Matrix Element:\n"); for(i=0;i<row_size;i++) { for(j=0;j<col_size;j++) { scanf("%d",&matrix[i][j]); } } //display Lower triangular matrix printf("Lower Triangular Matrix is:\n"); for(i=0;i<row_size;i++) { for(j=0;j<col_size;j++) { if(i<j) printf("0 "); else printf("%d ",matrix[i][j]); } printf("\n"); } }


Input/Output:

Enter the row Size Of the Matrix:3 Enter the columns Size Of the Matrix:3 Enter the Matrix Element: 7 8 3 5 2 1 4 2 1 Lower Triangular Matrix is: 7 0 0 5 2 0 4 2 1


Program in C++

Here is the source code of the C++ Program to display a lower triangular matrix.


Code:


#include<iostream> using namespace std; int main() { int row_size,col_size; //Get size of matrix cout<<"Enter the row Size Of the Matrix:"; cin>>row_size; cout<<"Enter the columns Size Of the Matrix:"; cin>>col_size; int matrix[row_size][col_size]; //Taking input of the matrix int i,j; cout<<"Enter the Matrix Element:\n"; for(i=0;i<row_size;i++) { for(j=0;j<col_size;j++) { cin>>matrix[i][j]; } } //display Lower triangular matrix cout<<"Lower Triangular Matrix is:\n"; for(i=0;i<row_size;i++) { for(j=0;j<col_size;j++) { if(i<j) cout<<"0 "; else cout<<matrix[i][j]<<" "; } cout<<"\n"; } }


Input/Output:

Enter the row Size Of the Matrix:2 Enter the columns Size Of the Matrix:2 Enter the Matrix Element: 7 8 9 6 Lower Triangular Matrix is: 7 0 9 6


Program in Java

Here is the source code of the Java Program to display a lower triangular matrix.


Code:


import java.util.Scanner; public class PrintLowerTriangularMatrix { public static void main(String[] args) { Scanner cs=new Scanner(System.in); int row_size,col_size; //Get size of matrix System.out.print("Enter the row Size Of the Matrix:"); row_size=cs.nextInt(); System.out.print("Enter the columns Size Of the Matrix:"); col_size=cs.nextInt(); int matrix[][] =new int[row_size][col_size]; //Taking input of the matrix int i,j; System.out.println("Enter the Matrix Element:"); for(i=0;i<row_size;i++) { for(j=0;j<col_size;j++) { matrix[i][j]=cs.nextInt(); } } //Display Lower triangular matrix System.out.print("Lower Triangular Matrix is:\n"); for(i=0;i<row_size;i++) { for(j=0;j<col_size;j++) { if(i<j) System.out.print("0 "); else System.out.print(matrix[i][j]+" "); } System.out.println(); } cs.close(); } }


Input/Output:

Enter the row Size Of the Matrix:3
Enter the columns Size Of the Matrix:3
Enter the Matrix Element:
7 8 9
2 3 4
5 6 7
Lower Triangular Matrix is:
7 0 0 
2 3 0 
5 6 7 


Program in Python

Here is the source code of the Python Program to display a lower triangular matrix.


Code:


# Get size of matrix row_size=int(input("Enter the row Size Of the Matrix:")) col_size=int(input("Enter the columns Size Of the Matrix:")) matrix=[] # Taking input of the matrix print("Enter the Matrix Element:") for i in range(row_size): matrix.append([int(j) for j in input().split()]) #Display Lower triangular matrix print("Lower Triangular Matrix is:\n") for i in range(len(matrix)): for j in range(len(matrix[0])): if i<j: print("0 ",end="") else: print(matrix[i][j],end=" ") print()


Input/Output:

Enter the row Size Of the Matrix:4 Enter the columns Size Of the Matrix:4 Enter the Matrix Element: 11 12 13 14 15 66 67 37 88 92 31 47 66 63 36 47 Lower Triangular Matrix is: 11 0 0 0 15 66 0 0 88 92 31 0 66 63 36 47



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