I need help with both of these methods

$/**$

$*$ finds all itineraries within a given price and within a given number of stops from source to destination airports

$*$ @param ag the AirlineGraph graph representing the airline system

$*$ @param source the String source airport code

$*$ @param destination the String destination airport code

$*$ @param budget the double maximum price in dollars

$*$ @param stops the int $(>=0)$ maximum number of stops

$*$ @return a $($possibly empty$)$ Set$>$ of paths with a total cost

$*$ less than or equal to the budget and at most the given number of stops. Each path is an ArrayList of

$*$ at most $2+$stops entries starting with source and ending with destination.

$*/$

public Set$>$ allTrips$($AirlineGraph ag$,$ String source, String destination, double budget, int stops$)$;

$/**$

$*$ finds all non$-$trivial itineraries within a given price and within a given number of stops from an airport back to itself

$*$ @param ag the AirlineGraph graph representing the airline system

$*$ @param source the String source airport code

$*$ @param budget the double maximum price in dollars

$*$ @param stops the int $(>0)$ maximum number of stops

$*$ @return a $($possibly empty$)$ Set$>$ of paths with a total cost

$*$ less than or equal to the budget and at most the given number of stops. Each path is an ArrayList of

$*$ at least $2$ and at most $2+$stops entries starting and ending with source.

$*/$

public Set$>$ allRoundTrips$($AirlineGraph ag$,$ String source, double budget, int stops$)$;

$\}$

Test Failed! Loading routes from file Finding all trips within $$2697\mathrm{.}78$ and $1$ stops from LTP to EFP Your solution: $[]$ Expected solution: $[[$LTP $($$$53\mathrm{.}78)$ RLY$,$ RLY $($$$973\mathrm{.}62)$ EFP$],[$LTP $($$$101\mathrm{.}26)$ ORH, ORH $($$$505\mathrm{.}48)$ EFP$],[$LTP $($$$723\mathrm{.}93)$ NRM$,$ NRM $($$$342\mathrm{.}7)$ EFP$]]$ Your solution is empty but expected solution is not.

Loading routes from file Finding all trips within $$2308\mathrm{.}82$ and $2$ stops from LWR Your solution: $[[$LWR $($$$441\mathrm{.}0)$ PVS$,$ PVS $($$$171\mathrm{.}55)$ LWR$],[$LWR $($$$608\mathrm{.}43)$ XUS, XUS $($$$757\mathrm{.}11)$ LWR$],[$LWR $($$$594\mathrm{.}46)$ XXS$,$ XXS $($$$448\mathrm{.}56)$ LWR$],[$LWR $($$$33\mathrm{.}06)$ KOI, KOI $($$$81\mathrm{.}65)$ LWR$],[$LWR $($$$38\mathrm{.}6)$ FKN$,$ FKN $($$$999\mathrm{.}68)$ LWR$]]$ Expected solution: $[[$LWR $($$$376\mathrm{.}41)$ FEN, FEN $($$$156\mathrm{.}75)$ PVS$,$ PVS $($$$171\mathrm{.}55)$ LWR$],[$LWR $($$$441\mathrm{.}0)$ PVS$,$ PVS $($$$171\mathrm{.}55)$ LWR$],[$LWR $($$$38\mathrm{.}6)$ FKN$,$ FKN $($$$774\mathrm{.}1)$ XXS$,$ XXS $($$$448\mathrm{.}56)$ LWR$],[$LWR $($$$608\mathrm{.}43)$ XUS, XUS $($$$292\mathrm{.}67)$ PVS$,$ PVS $($$$171\mathrm{.}55)$ LWR$],[$LWR $($$$608\mathrm{.}43)$ XUS, XUS $($$$198\mathrm{.}5)$ FKN$,$ FKN $($$$999\mathrm{.}68)$ LWR$],[$LWR $($$$376\mathrm{.}41)$ FEN, FEN $($$$15\mathrm{.}44)$ XXS$,$ XXS $($$$448\mathrm{.}56)$ LWR$],[$LWR $($$$38\mathrm{.}6)$ FKN$,$ FKN $($$$216\mathrm{.}37)$ KOI, KOI $($$$81\mathrm{.}65)$ LWR$],[$LWR $($$$441\mathrm{.}0)$ PVS$,$ PVS $($$$224\mathrm{.}77)$ XUS, XUS $($$$757\mathrm{.}11)$ LWR$],[$LWR $($$$594\mathrm{.}46)$ XXS$,$ XXS $($$$498\mathrm{.}9)$ FKN$,$ FKN $($$$999\mathrm{.}68)$ LWR$],[$LWR $($$$33\mathrm{.}06)$ KOI, KOI $($$$105\mathrm{.}2)$ PVS$,$ PVS $($$$171\mathrm{.}55)$ LWR$],[$LWR $($$$376\mathrm{.}41)$ FEN, FEN $($$$680\mathrm{.}91)$ TUS, TUS $($$$879\mathrm{.}08)$ LWR$],[$LWR $($$$376\mathrm{.}41)$ FEN, FEN $($$$172\mathrm{.}16)$ XUS, XUS $($$$757\mathrm{.}11)$ LWR$],[$LWR $($$$608\mathrm{.}43)$ XUS, XUS $($$$757\mathrm{.}11)$ LWR$],[$LWR $($$$38\mathrm{.}6)$ FKN$,$ FKN $($$$943\mathrm{.}66)$ XUS, XUS $($$$757\mathrm{.}11)$ LWR$],[$LWR $($$$608\mathrm{.}43)$ XUS, XUS $($$$275\mathrm{.}52)$ KOI, KOI $($$$81\mathrm{.}65)$ LWR$],[$LWR $($$$594\mathrm{.}46)$ XXS$,$ XXS $($$$348\mathrm{.}09)$ TUS, TUS $($$$879\mathrm{.}08)$ LWR$],[$LWR $($$$594\mathrm{.}46)$ XXS$,$ XXS $($$$24\mathrm{.}02)$ XUS, XUS $($$$757\mathrm{.}11)$ LWR$],[$LWR $($$$608\mathrm{.}43)$ XUS, XUS $($$$973\mathrm{.}81)$ XXS$,$ XXS $($$$448\mathrm{.}56)$ LWR$],[$LWR $($$$38\mathrm{.}6)$ FKN$,$ FKN $($$$999\mathrm{.}68)$ LWR$],[$LWR $($$$608\mathrm{.}43)$ XUS, XUS $($$$761\mathrm{.}69)$ TUS, TUS $($$$879\mathrm{.}08)$ LWR$],[$LWR $($$$38\mathrm{.}6)$ FKN$,$ FKN $($$$888\mathrm{.}98)$ PVS$,$ PVS $($$$171\mathrm{.}55)$ LWR$],[$LWR $($$$594\mathrm{.}46)$ XXS$,$ XXS $($$$814\mathrm{.}71)$ KOI, KOI $($$$81\mathrm{.}65)$ LWR$],[$LWR $($$$441\mathrm{.}0)$ PVS$,$ PVS $($$$888\mathrm{.}99)$ KOI, KOI $($$$81\mathrm{.}65)$ LWR$],[$LWR $($$$33\mathrm{.}06)$ KOI, KOI $($$$804\mathrm{.}81)$ XXS$,$ XXS $($$$448\mathrm{.}56)$ LWR$],[$LWR $($$$441\mathrm{.}0)$ PVS$,$ PVS $($$$806\mathrm{.}48)$ TUS, TUS $($$$879\mathrm{.}08)$ LWR$],[$LWR $($$$441\mathrm{.}0)$ PVS$,$ PVS $($$$237\mathrm{.}27)$ XXS$,$ XXS $($$$448\mathrm{.}56)$ LWR$],[$LWR $($$$376\mathrm{.}41)$ FEN, FEN $($$$79\mathrm{.}59)$ FKN$,$ FKN $($$$999\mathrm{.}68)$ LWR$],[$LWR $($$$33\mathrm{.}06)$ KOI, KOI $($$$961\mathrm{.}39)$ FKN$,$ FKN $($$$999\mathrm{.}68)$ LWR$],[$LWR $($$$594\mathrm{.}46)$ XXS$,$ XXS $($$$448\mathrm{.}56)$ LWR$],[$LWR $($$$33\mathrm{.}06)$ KOI, KOI $($$$671\mathrm{.}09)$ TUS, TUS $($$$879\mathrm{.}08)$ LWR$],[$LWR $($$$33\mathrm{.}06)$ KOI, KOI $($$$81\mathrm{.}65)$ LWR$],[$LWR $($$$376\mathrm{.}41)$ FEN, FEN $($$$684\mathrm{.}13)$ KOI, KOI $($$$81\mathrm{.}65)$ LWR$]]$ expected:$<mi>[</mi><mi>[</mi>$LWR $($$$376\mathrm{.}41)$ FEN, FEN $($$$156\mathrm{.}75)$ PVS$,$ PVS $($$$171\mathrm{.}55)$ LWR$],[$LWR $($$$441\mathrm{.}0)$ PVS$,$ PVS $($$$171.$