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60 lines
1.8 KiB
Java
60 lines
1.8 KiB
Java
/*
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This is the java program to find out a given matrix is sparse matrix or not. Sparse matrix contains zero elements above a certain threshold. This threshold is given by (n*m)/2, where n and m are the rows and columns in matrix. Hence, if a matrix contains more than nm/2 mumber of zeros it is sparse matrix otherwise not.
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*/
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//This is a sample program to check whether the matrix is sparse matrix or not
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//The complexity of the code is O(n^2)
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import java.util.Scanner;
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public class Sparsity_Matrix
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{
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public static void main(String args[])
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{
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Scanner sc = new Scanner(System.in);
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System.out.println("Enter the dimensions of the matrix: ");
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int m = sc.nextInt();
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int n = sc.nextInt();
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double[][] mat = new double[m][n];
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int zeros = 0;
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System.out.println("Enter the elements of the matrix: ");
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for(int i=0; i<m; i++)
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{
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for(int j=0; j<n; j++)
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{
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mat[i][j] = sc.nextDouble();
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if(mat[i][j] == 0)
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{
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zeros++;
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}
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}
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}
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if(zeros > (m*n)/2)
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{
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System.out.println("The matrix is a sparse matrix");
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}
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else
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{
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System.out.println("The matrix is not a sparse matrix");
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}
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sc.close();
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}
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}
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/*
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Enter the dimensions of the matrix:
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2 3
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Enter the elements of the matrix:
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1 0 0
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2 1 1
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The matrix is not a sparse matrix
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$ javac Sparsity_matrix.java
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$ java Sparsity_matrix
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Enter the dimensions of the matrix:
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3 4
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Enter the elements of the matrix:
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1 0 0 0
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0 1 0 0
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0 0 1 1
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The matrix is a sparse matrix |