UVa_488 Triangle Wave

 Triangle Wave 

In this problem you are to generate a triangular wave form according to a specified pair of Amplitude and Frequency.

Input and Output

The input begins with a single positive integer on a line by itself indicating the number of the cases following, each of them as described below. This line is followed by a blank line, and there is also a blank line between two consecutive inputs.

Each input set will contain two integers, each on a separate line. The first integer is the Amplitude; the second integer is the Frequency.

For each test case, the output must follow the description below. The outputs of two consecutive cases will be separated by a blank line.

For the output of your program, you will be printing wave forms each separated by a blank line. The total number of wave forms equals the Frequency, and the horizontal ``height'' of each wave equals the Amplitude. The Amplitude will never be greater than nine.

The waveform itself should be filled with integers on each line which indicate the ``height'' of that line.

NOTE: There is a blank line after each separate waveform, excluding the last one.

Sample Input

1

3
2

Sample Output

1
22
333
22
1

1
22
333
22
1

#include <stdio.h>
int main()
{
    int a, f, n;
    int i, j;
    scanf("%d",&n);
    while(n--)
    {
        scanf("%d",&a);
        scanf("%d",&f);
        while(f--)
        {
            for(i =1; i <= a; i++)
            {
                for(j =0; j < i; j++)
                    printf("%d",i);
                 printf("\n");
            }
            for(i = a-1; i >=1; i--)
            {
                 for(j =0; j < i; j++)
                    printf("%d",i);
                printf("\n");
            }
            if(f)
                printf("\n");
        }
        if(n)
            printf("\n");
    }
    return0;
}