Question

Write a program that checks if all the input numbers cover 1 to 99. Each ticket for the Pick-10 lotto has 10 unique numbers ranging from 1 to 99. Suppose you buy a lot of tickets and like to have them cover all numbers from 1 to 99. Write a program that reads the ticket numbers from a file and checks whether all numbers are covered. Assume the last ending number in the file is 0. Suppose the file contains the numbers

80 3 87 62 30 90 10 21 46 27

12 40 83 9 39 88 95 59 20 37

80 40 87 67 31 90 11 24 56 77

11 48 51 42 8 74 1 41 36 53

52 82 16 72 19 70 44 56 29 33

54 64 99 14 23 22 94 79 55 2

60 86 34 4 31 63 84 89 7 78

43 93 97 45 25 38 28 26 85 49

47 65 57 67 73 69 32 71 24 66

92 98 96 77 6 75 17 61 58 13

35 81 18 15 5 68 91 50 76 0

Your program should display

The tickets cover all numbers

Suppose the file contains the numbers

11 48 51 42 8 74 1 41 36 53

52 82 16 72 19 70 44 56 29 33

0

Your program should display

The tickets don't cover all numbers

Answer 1

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Scanner;

public class Main {
        public static void main(String args[]) throws Exception {
    
                // scanner class to read file
                Scanner sc = new Scanner(new BufferedReader(new FileReader("lotto.txt")));
                
                // declare a hash array which track all the numbers from 1 to 99
                // declare pther variables
                int h[]=new int[99],sum=0;
                int t=0,i;
                  
                // populate h with 1 to 99
                for(i=0;i<99;i++)
                        h[i]=i+1;
                
                //read each line
                while(sc.hasNextLine()){
                        // store each word of a line
                        String[] line = sc.nextLine().trim().split(" ");
                        // check each word
                        for(i=0; i<line.length; i++){
                           //convert to int
                           t=Integer.parseInt(line[i]);
                           
                           // if 0 is detected then end of numbers in file
                           if(t==0)
                                   break;
                           
                           // discard  number
                           h[t-1]=0;
                        }
                        if(t==0)
                                break;
                }   
                  
                // check if all the element has been discarded or not
                t=0;
                for(i=0;i<99;i++){
                        if(h[i]>0){
                                System.out.print("The tickets don't cover all numbers");
                                t=1;
                                break;
                        }
                }
                if(t==0)
                        System.out.print("The tickets cover all numbers");
        }
}

___________________________________________________________________

# function to if file contains 1 to 99
def check_numbers(file):
    # declare the variables
    Line = []

    # open the file
    f=open(file,"r")

    # create a hash array to track numbers from 1 to 99
    h=[]
    for i in range(1, 100):
        h.append(i)
    
    # iterate over each line of file
    flag=0
    for line in f:
        # copy current line
        Line=line
        # extract numbers from Line 
        numbers = [int(num) for num in Line.split() if num.isdigit()]

        # discard all detected numbers from hash array
        # make them 0
        for i in range(len(numbers)):
            # if 0 is detected then end of numbers in file
            if numbers[i]==0:
                break
            h[numbers[i]-1]=0

    # if all num bers from 1 to 99 detected
    if sum(h)==0:
        return True
    else:
        return False
    

# main function
def main():
    # declare filename
    filename="lotto.txt"
    # call function and get return value
    t=check_numbers(filename)
    # conclusion
    if t==True:
        print("The tickets cover all numbers")
    else:
        print("The tickets don't cover all numbers")
        
# driver code
if __name__ == "__main__":
    main()

___________________________________________________________________

80 3 87 62 30 90 10 21 46 27
12 40 83 9 39 88 95 59 20 37
80 40 87 67 31 90 11 24 56 77
11 48 51 42 8 74 1 41 36 53
52 82 16 72 19 70 44 56 29 33
54 64 99 14 23 22 94 79 55 2
60 86 34 4 31 63 84 89 7 78
43 93 97 45 25 38 28 26 85 49
47 65 57 67 73 69 32 71 24 66
92 98 96 77 6 75 17 61 58 13
35 81 18 15 5 68 91 50 76 0

___________________________________________________________________

The tickets cover all numbers

___________________________________________________________________

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