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I need help with this assignment.<br/>Use the pseudocode shown in Snippet

2.11 and Snippet 2.12 to implement the full merge sort algorithm in Java.
Your MergeSort class should contain 3 methods, other than the main() stub.
mergeSort(array, start, end)     if(start &lt; end)         midPoint = (end - start) / 2 + start         mergeSort(array, start, midPoint)         mergeSort(array, midPoint + 1, start)         merge(array, start, midPoint, end) Snippet 2.11: Recursive merge sort
merge(array, start, middle, end)     i = start     j = middle + 1     arrayTemp = initArrayOfSize(end - start + 1)     for (k = 0 until end-start)         if (i &lt;= middle &amp;&amp; (j &gt; end || array[i] &lt;= array[j]))             arrayTemp[k] = array[i]             i++         else             arrayTemp[k] = array[j]             j++             copyArray(arrayTemp, array, start) Snippet 2.12: Merge Psuedocode
merge(array)     merge(array, start, end) Steps for Completion

-Start from the mergeSort() method, which splits the array in two, recursively sorts both, and merges the result.
-Then, implement the merge method, which merges both ends of the split array into another space.
-After the merge is done, copy the new array back in place of the input array.

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