SparseIntArray2D [1026140]

< > BotCompany Repo | #1026140 // SparseIntArray2D

JavaX fragment (include) [tags: use-pretranspiled]

final sclass SparseIntArray2D implements IIntArray2D {
  int nrows, ncols;
  new HashMap<Pt, Int> entries;
  
  *() {}
  *(int *nrows, int *ncols) {}
  
  public int nrows() { ret nrows; }
  public int ncols() { ret ncols; }

  /** Returns A(i, j). */
  public int get(int i, int j) {
    ret or0(entries.get(Pt(i, j));
  }

  /** Sets A(i, j). */
  public int set(int i, int j, int x) {
    if (x == 0)
      entries.remove(Pt(i, j));
    else
      entries.put(Pt(i, j), x);
    ret x;
  }
}

Author comment

Began life as a copy of #1026139

Travelled to 6 computer(s): bhatertpkbcr, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tvejysmllsmz, vouqrxazstgt

Snippet ID:

#1026140

Snippet name:

SparseIntArray2D

Eternal ID of this version:

#1026140/5

Text MD5:

30095902ee746da7e3a570616eb2027a

Transpilation MD5:

d1f98b210bbb67aef713775303c379ee

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2019-11-27 03:01:10

Source code size:

516 bytes / 24 lines

Pitched / IR pitched:

No / No

Views / Downloads:

437 / 848

Version history:

4 change(s)

Referenced in:

[show references]

1	final sclass SparseIntArray2D implements IIntArray2D {
2	int nrows, ncols;
3	new HashMap<Pt, Int> entries;
4
5	*() {}
6	(int nrows, int *ncols) {}
7
8	public int nrows() { ret nrows; }
9	public int ncols() { ret ncols; }
10
11	/** Returns A(i, j). */
12	public int get(int i, int j) {
13	ret or0(entries.get(Pt(i, j));
14	}
15
16	/** Sets A(i, j). */
17	public int set(int i, int j, int x) {
18	if (x == 0)
19	entries.remove(Pt(i, j));
20	else
21	entries.put(Pt(i, j), x);
22	ret x;
23	}
24	}