How to find best route to reach from source to destination [closed]

const first_line = [a,b,c,h,e,f,g]
const second_line = [h,i,j,k,m]
const third_line = [o,n,m,p,q]
const fourth_line = [aa,bb,cc,p,dd,ee,ff]

Above is the kind of metro rail arrays with some stations. So I want to know how can I calculate the shortest distance and choose best line to reach there. How i find the shortest route and get all the stations in the array that i need to pass or change trains.

Like a to p or a to ff

Please let me know if anybody can provide me good login of it in javascript

Via Active questions tagged javascript - Stack Overflow https://ift.tt/jC63uEl

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