Review Lab 0, City class coding Submitting work for credit before 1125. Solution

Question

Review Lab 0, City class coding Submitting work for credit before 1125. Solutions will be given on 1/25 The class must implement Comparable interface Class city has three variables: name, state (of type String) and population (of type int) It has the three-variable constructor taking in parameters for publis city (String n, String s, int p) name = n; state population p; Define all three getters and the setter for field population Additionally, implement equals and compareTo methods as follows: RabiS int sompareTe (City st) f int temp = state. compareTo (cts tate); LE (temp != 0) return temp ; else return name compareTo (ct.name); Rublig boolean equals (Object obi) f City ot= (City) obj; return. this.compareTo(et) -0: You need also implement tostring method to provide a meaningful description of a city of known name, state and population.

Explanation / Answer

#include <conio.h>

class city

{

void city(string n, string s) //constructor for city to return name and state
{
name=n
state=s
}

int get_name() //getter for city name

public boolean equals(Object obj){

city ct=(city) obj;

return this.compareTo(ct)==0;

}

public int compareTo(city ct){

int temp= state.compareTo(ct.state);

if(temp!=0) return temp;

else return name.compareTo(ct.name);

}

}

}

int main()

{

city c1= new city("abc", "xyz");

c1.set_population(1234567);

city c2= new city("lmn", "abb");

c2.equals(c1);

return 0;

}

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