if neigbour of current element exist int the map,then it would have bool value 1,but if it does not exist int the map(not visited) why would it give value 1?
Line 55 of code
We have used not of visited[i].
!(visited[i]).
If visited[i] = 0 ie not visited, condition gives 1. Hence we visit it.
if visited[i]=1 ie already visited, condition gives 0. Hence we don’t visit it.
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