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Matrix

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7 views2 pages

Matrix

Uploaded by

hkschool999
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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MATRIX

(2D ARRAYS)

//creating a 2D array syntax:


1. For Integer dataType:

int[][] matrix = new int[rows][cols];

2. For Decimal(float) dataType:

float[][] matrix = new float[rows][cols];

3. For Decimal(double) dataType:

double[][] matrix = new double[rows][cols];

/* take a matrix as input from the user.


Search for a given number x and print the indices at which it occurs.*/

import java.util.*;
public class Main{
public static void main(String args[]){
Scanner in = new Scanner(System.in);

System.out.println("Enter no. of rows: ");


int rows = in.nextInt();

System.out.println("Enter no. of columns: ");


int cols = in.nextInt();

int[][] numbers = new int[rows][cols];

//input
//rows
for(int i = 0; i < rows; i++){
//rows
for(int j = 0; j < cols; j++){
numbers[i][j] = in.nextInt();
}
}
System.out.println("Enter the number you want to
search: ");
int x = in.nextInt();

//output
for(int i = 0; i < rows; i++){
for(int j = 0; j < cols; j++){
if(numbers[i][j] == x){
System.out.println(x + " found at index ("
+ i + "," + j + ")" );
}
}
}
}
}

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