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Print half pyramids using * as shown

Pattern 1 :

*
**
***
****
*****

Logic :

i	height	Number of * (= i)
1	5	1
2	5	2
3	5	3
4	5	4
5	5	5

Solution :

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Pattern 2 :

    *
   **
  ***
 ****
*****

Logic :

i	height	Number of spaces (= height - i)	Number of * (= i)
1	5	4	1
2	5	3	2
3	5	2	3
4	5	1	4
5	5	0	5

Solution :

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Pattern 3 :

*****
****
***
**
*

Logic :

i	height	Number of * (= height - i + 1)
1	5	5
2	5	4
3	5	3
4	5	2
5	5	1

Solution :

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Pattern 4 :

***** 
 **** 
  *** 
   ** 
    * 

Logic :

i	height	Number of spaces (= i - 1)	Number of * (= height - i + 1)
1	5	0	5
2	5	1	4
3	5	2	3
4	5	3	2
5	5	4	1

Solution :

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