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Reverse Right angle Triangle with stars

LEVEL:Beginner

Description

Print the pattern as shown below for all test cases.

Input Format

First line contains the value N.

Output Format

Print the output as shown in below examples.


Example 1:

Input
3
Output
    *
  * *
* * *
Example 2:

Input
4
Output
      *
    * *
  * * *
* * * *
Example 3:

Input
5
Output
        *
      * *
    * * *
  * * * *
* * * * *

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Approach


Step-i) assign 1 to i
Step-ii) assign 1 to j
Step-iii) if j is greater than or equal to N-i+1 print * and space(" ") else print two spaces (" ")
Step-iv) increment j value by one
Step-v)repeat steps iii and iv till j is less than or equal to N
Step-vi)go to new line and increment i value by one
Step-vii)repeat steps ii to vi till i is less than or equal to N

Time Complexity: O(n^2)
Space Complexity: O(1)


Note :

Let us know if you can come up with a better approach, mail us at support@theinquisitive.in Your approach will be reviewed and posted with credits to you.

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