sds.runtime.matrix.data">MatrixBlock</a>&nbsp;in,
                                      int&nbsp;rl,
                                      int&nbsp;ru)</pre>
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<h4>mergeNnzCounts</h4>
<pre class="methodSignature">public static&nbsp;int[]&nbsp;mergeNnzCounts&#8203;(int[]&nbsp;cnt,
                                   int[]&nbsp;cnt2)</pre>
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