Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2143107x 2143107x 2143107x 1x 1x 3199469x 3199469x 1x 1x 1772445x 1772445x 1x 1x 46959x 46959x 1x 1x 37118x 37118x 1x 1x 93534x 93534x 1x 1x 35927x 35927x 1x | // largest value that is a Smi on all V8 builds, larger values (eg. Number.MAX_SAFE_INTEGER) make V8
// store row/col of every Position as boxed heap numbers, costing ~32 bytes per Position
export const MAX_POSITION_VALUE = 2 ** 30 - 1;
// first position is (1,1)
export class Position {
private readonly row: number;
private readonly col: number;
public constructor(row: number, col: number) {
this.row = row;
this.col = col;
}
public getCol(): number {
return this.col;
}
public getRow(): number {
return this.row;
}
public isAfter(p: Position): boolean {
return this.row > p.row || (this.row === p.row && this.col >= p.col);
}
public equals(p: Position): boolean {
return this.row === p.getRow() && this.col === p.getCol();
}
public isBefore(p: Position): boolean {
return this.row < p.row || (this.row === p.row && this.col < p.col);
}
public isBetween(p1: Position, p2: Position): boolean {
return this.isAfter(p1) && this.isBefore(p2);
}
}
|