Listbuffer of list in Scala for efficient traversal

Today "DT Big Data DreamWorks Video" 82nd: How does the Listbuffer of list in Scala achieve efficient traversal calculations? 》
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This video by the Liaoliang teacher through the code to combat the way in layman's explanation
The Listbuffer of list in Scala is how to achieve efficient traversal computation. The main contents of this video are as follows:
The list and string in Listbuffer and Java are similar to the StringBuffer design,
The list and string designs are immutable by default, and the list generated by the var list = list[xx] form is modified by Var,
However, when the type thinks immutable, adding an element to it, there are many intermediate variables, and the space is wasted very much.
In comparison, the Listbuffer type can avoid the generation of intermediate variables when adding elements, saving space and avoiding frequent GC.
Liaoliang teacher QQ Group No. 462923555 No. 18610086859

Listbuffer of list in Scala for efficient traversal