RosettaCodeData/Task/Floyds-triangle/Java/floyds-triangle.java

21 lines
492 B
Java

public class Floyd {
public static void main(String[] args){
printTriangle(5);
printTriangle(14);
}
private static void printTriangle(int n){
System.out.println(n + " rows:");
for(int rowNum = 1, printMe = 1, numsPrinted = 0;
rowNum <= n; printMe++){
int cols = (int)Math.ceil(Math.log10(n*(n-1)/2 + numsPrinted + 2));
System.out.printf("%"+cols+"d ", printMe);
if(++numsPrinted == rowNum){
System.out.println();
rowNum++;
numsPrinted = 0;
}
}
}
}