[28]-A. 연습문제 : 2차원 반복문

# 실습예제1) 2차원 반복문
# 삼각형 그리기

## 1)
## *
## **
## ***
for i in range(3):
     for j in range(i+1):
          print("*", end="")
     print()
print()

## 2)
## ***
## **
## *
for i in range(3):
     for j in range(3-i):
          print("*", end="")
     print()
print()

## 3)
## *##
## **#
## ***
for i in range(3):
     for j in range(i+1):
          print("*", end="")
     for k in range(2-i):
          print("#", end="")
     print()
print()

## 4)
##     @
##    @@
##   @@@
##  @@@@
## @@@@@
for i in range(5):
     for j in range(4-i):
          print(" ", end="")
     for k in range(i+1):
          print("@", end="")
     print()
print()

## 5)
## *****
##  ***
##   *
kk = 5
for i in range(3):
     for j in range(i):
          print(" ", end="")
     for k in range(kk,0,-1):
          print("*", end="")
     kk -= 2
     print()
print()