8934. Marathon 3

The race participants were assigned numbers from a to b, and all the information was recorded in the computer, but only in reverse order. Print the athletes’ numbers.

Input. Two positive integers a and b (a ≤ b ≤ 1000).

Output. Print the athletes’ numbers in decreasing order.

Sample input	Sample output
3 7	7 6 5 4 3

SOLUTION

loop

Algorithm analysis

Use a for loop to print the athletes’ numbers. Print the numbers from a to b in decreasing order.

Algorithm implementation

Read the input data.

scanf("%d %d", &a, &b);

Print the athletes’ numbers in decreasing order.

for (i = b; i >= a; i--)

printf("%d ", i);

Java implementation

import java.util.*;

class Main

{

public static void main(String[] args)

{

Scanner con = new Scanner(System.in);

int a = con.nextInt();

int b = con.nextInt();

for(int i = b; i >= a; i--)

System.out.print(i + " ");

con.close();

}

}

Python implementation

Read the input data.

a, b = map(int, input().split())

Print the athletes’ numbers in decreasing order.

for i in range(b, a - 1, -1):

print(i)