Question $3$ Data Structure

Given, the following data items from small.TopRealestate.csv file and the key is stock symbol. In this example we are

searching for symbol DHC in the customDictionary. If all the data items are inserted into a DynamicArray and we know the

DHC is in index $5.$ Which of the data$-$structure is faster, example dynamicArray.get$(5)$ vs dictionary.get$("$DHC$")?$

map CustomDictionarye $1943$