11. Define swaps. Give four distinct uses of swaps with examples. Make sure to illustrate the cases with graphs and numerical examples whenever necessary. How are you going to implement this in Barchart? Just give the methodology not a print output from Barchart. 11. Define swaps. Give four distinct uses of swaps with examples. Make sure to illustrate the cases with graphs and numerical examples whenever necessary. How are you going to implement this in Barchart? Just give the methodology not a print output from Barchart