Topic : Nested For Loop
class nestedloops
{
public static
void main()
{
int i,j;
for
(i=1;i<=2;i++)
{
for(j=1;j<=5;j=j+2)
{
System.out.println("i ="+i+" j ="+j);
}
}
}
}
class nestedloops2
{
public static
void main()
{
int i,j;
for
(i=14;i>=10;i=i-2)
{
for(j=9;j>=1;j=j-4)
{
System.out.println("i ="+i+" j ="+j);
}
}
}
}
/*
* WAP to get the
following output:
*
**
***
*/
class
floydTriangle
{
public static
void main()
{
int i,j;
for
(i=1;i<=3;++i) //rows
{
for(j=1;j<=i;j++) //column
{
System.out.print("*");
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
****
***
**
*
*/
class
InvertedTriangle
{
public static
void main()
{
int i,j;
for
(i=1;i<=4;++i) //rows
{
for(j=4;j>=i;j--) //column
{
System.out.print("*");
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
4321
432
43
4
*/
class invertedNum
{
public static
void main()
{
int i,j;
for
(i=1;i<=4;++i) //rows
{
for(j=4;j>=i;j--) //column
{
System.out.print(j);
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
5
54
543
5432
54321
*/
class triangleNum
{
public static
void main()
{
int i,j;
for
(i=5;i>=1;--i) //rows
{
for(j=5;j>=i;j--) //column
{
System.out.print(j);
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
5
5 4
5 4 3
5 4
3 2
5 4
3 2 1
*/
class
triangleNumwithSpace
{
public static
void main()
{
int i,j;
for
(i=5;i>=1;--i) //rows
{
for(j=5;j>=i;j--) //column
{
System.out.print(j +"\t");
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
****
****
****
*/
class squareSymbol
{
public static
void main()
{
int i,j;
for
(i=1;i<=3;i++) //rows
{
for(j=1;j<=4;j++) //column
{
System.out.print("*");
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
5
54
543
5432
54321
*/
class nestedloop4
{
public static
void main()
{
int i,j;
for (i=5;i>=1;--i) //rows
{
for(j=5;j>=i;--j) //column
{
System.out.print(j);
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
A
AB
ABC
ABCD
ABCDE
A=65 to Z=90
a=97 to z=122
*/
class nestedloop5
{
public static
void main()
{
int i,j;
for
(i=65;i<=69;i++) //rows
{
for(j=65;j<=i;j++) //column
{
System.out.print((char)j);
}
System.out.println();
}
}
}
/*
* WAP to accept
number of lines of floyd triangle required
* and accordingly
display the output.
* for example the
user enter 5, five lines of floyd triangle are:
*
1
23
456
78910
1112131415
*/
import java.util.Scanner;
class
floydTriangleReq
{
public static
void main()
{
int
i=1,j,c=i,n;
Scanner
ob=new Scanner(System.in);
System.out.println("Enter no. of lines floyd triangle
required:");
n=ob.nextInt();
System.out.println("_____Output______");
for
(i=1;i<=n;i++) //rows
{
for(j=1;j<=i;j++) //column
{
System.out.print(c);
c++;
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
10 9
8 7
6 5 4
3 2
1
*/
class nestedloop7
{
public static
void main()
{
int
i,j,c=10;
for
(i=4;i>=1;i--) //rows
{
for(j=1;j<=i;j++) //column
{
System.out.print(c+"\t");
c--;
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
*
*#
*#*
*#*#
*#*#*
*/
class nestedloop8
{
public static
void main()
{
int i,j;
for
(i=1;i<=5;i++) //rows
{
for(j=1;j<=i;j++) //column
{
if(j%2==0)
{
System.out.print("#");
}
else
{
System.out.print("*");
}
}
System.out.println();
}
}
}
/*
* WAP to get the
following output:
1
1 2
1 2
3
1 2
3 4
1 2
3 4 5
*/
class
tri_num_invert
{
public static
void main()
{
int i,j;
for
(i=1;i<=5;i++) //rows
{
for(j=1;j<=i;j++) //column
{
System.out.print(j +"\t");
}
System.out.println();
}
}
}
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