# Last class review: loop over a string

# Ask for a string from the user, and an integer n
# Create and print a new string in which each character from
# the original string is replicated n times.
# Example input: "go!" and n=3,
# output print "gggooo!!!"


string = raw_input('give me a string: ')
number = int(raw_input('give me a number: '))   # without int first

result = ''

for letter in string:
    result = result + number*letter  # with 3 first

print result

# tests:
# number =0
# number = -1, no crash thus good!!


# NEW LOOP: iterations using the range function
# range(n) returns a list of numbers
# [0, 1, ... n-1]

# Ex 1: add successive numbers up to 13 (not included)
asum = 0
for num in range(13):
    asum = asum + num
    #print asum  # shows how asum accumulates the loop variable value


print "sum =", asum



# Write for loops to print the following sequences of numbers:
# A.    11 22 33 44 ... 88 99

for num in range(9):
    print 11 *(num + 1)

# B.   -5 -4 -3 -2 -1 0

n = 6  # n can be changed to get longer sequence
for num in range(n):
    print num-(n-1), 
print


# C.   1 2 4 8 16 32 64 256 512 1024

for num in range(11):
    print 2**num,