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    Upper Triangular Matrix Program in Java

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    Java Program to display the upper triangular matrix

    In this example, we will see a java program to display the upper triangular matrix.

    An upper triangular matrix is a square matrix in which all the elements below the principle diagonal are zero.

    Program:
    
public class Main
{    
public static void main(String[] args) 
{    
int rows, cols;    
int a[][] = {       
{1, 2, 3},    
{8, 6, 4},    
{4, 5, 6}    
};    
rows = a.length;    
cols = a[0].length;    
if(rows != cols){    
System.out.println("Matrix should be a square matrix");    
}    
else {    
System.out.println("Upper triangular matrix: ");    
for(int i = 0; i < rows; i++){    
for(int j = 0; j < cols; j++){    
if(i > j)    
System.out.print("0 ");    
else    
System.out.print(a[i][j] + " ");    
}    
System.out.println();    
}    
}    
}    
}
    Output
    Upper triangular matrix:
    1 2 3
    0 6 4
    0 0 6
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