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AreaRect.java
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AreaRect.java
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import java.util.*;
public class AreaRect
{
public class Rectangle
{
int start = 0;
int end = 0;
int height = 0;
public Rectangle( int s, int e, int h )
{
start = s;
end = e;
height = h;
}
public int getHeight()
{
return height;
}
public int getStart()
{
return start;
}
public int getEnd()
{
return end;
}
}
int maxEnd = 0;
int maxHeight = 0;
int[] heightMap = null;
java.util.LinkedList<Rectangle> rectList = new java.util.LinkedList<Rectangle>();
public AreaRect()
{
}
public void parseTriplets(String[] triplets)
{
for ( String triplet : triplets )
{
String[] parts = triplet.split(",");
if ( parts.length == 3 )
{
int start = Integer.parseInt(parts[0]);
int end = Integer.parseInt(parts[1]);
int height = Integer.parseInt(parts[2]);
Rectangle r = new Rectangle(start, end, height);
rectList.add(r);
if ( maxEnd < end )
{
maxEnd = end;
}
if ( maxHeight < height )
{
maxHeight = height;
}
}
else
{
System.out.println("Error parsing input, triplet was malformed: " + triplet );
}
}
}
public void createHeightMap()
{
int area = 0;
heightMap = new int[maxEnd+1];
for ( Rectangle r : rectList )
{
for ( int i = r.getStart(); i <= r.getEnd(); i++)
{
if ( r.getHeight() > heightMap[i] )
{
area += r.getHeight() - heightMap[i];
heightMap[i] = r.getHeight();
}
}
}
System.out.println("Total area is " + area );
}
public void printHeightMap()
{
int curHeight = maxHeight;
while (curHeight >= 0 )
{
for ( int i = 0; i < heightMap.length; i++ )
{
if ( heightMap[i] != 0 && heightMap[i] >= curHeight )
{
System.out.print("#");
}
else
{
System.out.print(" ");
}
}
curHeight--;
System.out.print("\n");
}
}
public static void main (String args[])
{
// input is 1 line of text with comma separated triplets followed by spaces
// ie: 1,3,4 4,3,5 6,5,7 2,3,5 ...
Scanner in = new Scanner(System.in);
String input = "";
if( in.hasNextLine() )
{
input = in.nextLine();
}
AreaRect ar = new AreaRect();
ar.parseTriplets(input.split(" "));
ar.createHeightMap();
ar.printHeightMap();
}
}