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basic-programs/java/SymmetricMatrix.java at master · Skm26/basic-programs · GitHub
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SymmetricMatrix.java
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SymmetricMatrix.java
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/*
* Program checks if Matrix is symmetric or not and finds the sum of left and right diagonals
* Accept size M
* Input values in array
* Display original matrix
* Check if marix is symmetric
* Add left diagonal elements and right diagonal elements
* Display if the matrix is symmetric or not
* Print sum of left and right diagonal elements
*/
import
java
.
util
.*;
class
SymmetricMatrix
{
void
main
()
{
int
M
;
int
arr
[][];
Scanner
sc
=
new
Scanner
(
System
.
in
);
System
.
out
.
println
(
"Enter number of rows and coloumn"
);
M
=
sc
.
nextInt
();
arr
=
new
int
[
M
][
M
];
if
(
M
<=
0
)
{
System
.
out
.
println
(
"Enter positive number"
);
}
else
{
int
lsum
=
0
;
int
rsum
=
0
;
for
(
int
i
=
0
;
i
<
M
;
i
++)
{
for
(
int
j
=
0
;
j
<
M
;
j
++)
{
System
.
out
.
println
(
"enter integer"
);
arr
[
i
][
j
]=
sc
.
nextInt
();
}
}
System
.
out
.
println
(
"Original Matrix"
);
for
(
int
i
=
0
;
i
<
M
;
i
++)
{
//Printing original matrix
for
(
int
j
=
0
;
j
<
M
;
j
++)
{
System
.
out
.
print
(
arr
[
i
][
j
]+
" "
);
}
System
.
out
.
println
();
}
int
c
=
0
;
for
(
int
i
=
0
;
i
<
M
;
i
++)
{
for
(
int
j
=
0
;
j
<
M
;
j
++)
{
if
(
arr
[
i
][
j
]!=
arr
[
j
][
i
])
c
++;
if
(
i
==
j
)
lsum
+=
arr
[
i
][
j
];
if
((
i
+
j
)==(
M
-
1
))
rsum
+=
arr
[
i
][
j
];
}
}
if
(
c
==
0
)
System
.
out
.
println
(
"THE GIVEN MATRIX IS SYMMETRIC"
);
else
System
.
out
.
println
(
"THE GIVEN MATRIX IS NOT SYMMETRIC"
);
System
.
out
.
println
(
"The sum of the left diagonal = "
+
lsum
);
System
.
out
.
println
(
"The sum of the right diagonal = "
+
rsum
);
}
}
}
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