Execution Speed

1
Execution Speed

• "final" and "static" methods are statically
  bound.
• They execute slightly faster than instance
  methods.
• final int findMaxSquare(int row, int col)
• ... // this method is bound at compile time
• // a class can be final, too
• final class Island ...

2
Execution Speed

• Access to 2-D arrays is most efficient if you
  vary the 2nd subscript fastest
• int grid new int1020
• // more efficient
• for(row0 rowlt10 row)
• for(col0 collt20 col) sum gridrowcol
• // slower
• for(col0 collt20 col) for(row0 rowlt10
  row) sum gridrowcol