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< > BotCompany Repo | #1026140 // SparseIntArray2D

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

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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

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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): No
Created/modified: 2019-11-27 03:01:10
Source code size: 516 bytes / 24 lines
Pitched / IR pitched: No / No
Views / Downloads: 151 / 482
Version history: 4 change(s)
Referenced in: [show references]