Question 18: Consider the following condensed version of the “Trains”…

Consider the following condensed version of the “Trains” dataset. There are a total of n stations, with stations being indexed from 0 to n − 1. There are M rows in the table. Each row contains information about a train that connects two stations without any stops in between.

Consider the following condensed version of the “Trains” dataset. There are a total of n stations, with stations being indexed from 0 to n − 1. There are M rows in the table. Each row contains information about a train that connects two stations without any stops in between. Row r, tells us that train t departs from station i and arrives at station j after covering a distance of d kilometers without stopping at any intermediate station. Therefore, each train t will occupy multiple rows in this table.
This scenario is modeled as a graph and is represented by a matrix A. Each node in the graph corresponds to a station. Assume that the value of n is already given to you. Consider the following pseudocode.

Consider the following condensed version of the “Trains” dataset. There are a total of n stations, with stations being indexed from 0 to n − 1. There are M rows in the table. Each row contains information about a train that connects two stations without any stops in between. Row r, tells us that train t departs from station i and arrives at station j after covering a distance of d kilometers without stopping at any intermediate station. Therefore, each train t will occupy multiple rows in this table.
This scenario is modeled as a graph and is represented by a matrix A. Each node in the graph corresponds to a station. Assume that the value of n is already given to you. Consider the following pseudocode. Based on the above data, answer the given subquestions.

ijMin is a procedure that accepts a pair of stations (i, j), and the matrix A as input. It returns a train which goes from i to j by covering the least distance, without stopping at any intermediate station. If there is no train connecting these two stations, the procedure returns -1. The pseudocode may have mistakes. Identify all of them (if any).

ijMin is a procedure that accepts a pair of stations (i, j), and the matrix A as input. It returns a train which goes from i to j by covering the least distance, without stopping at any intermediate station. If there is no train connecting these two stations, the procedure returns -1. The pseudocode may have mistakes. Identify all of them (if any).