strings = []   #is empty, i.e. no elements, length is 0
n = eval(input("Enter the number of strings you have: "))
for i in range(n):    #loop n times
    string = input("Enter a string: ")
    strings.append(string)

#display as a list     [v1,v2,...,vn]
print(strings)
print(type(strings))
print("Length of strings list:", len(strings))

#access each element using in operator.  "traverse" the list
for string in strings:
    print(string, end=" ")
print()

#use index to access each element
for i in range(len(strings)):
    print(i, ":", strings[i])
    
#print(strings[5])

#functions that take array argument
#print("Sum=",sum(strings))  #cannot do sum of strings
print("Length=",len(strings))
print("Max=",max(strings))
print("Min=",min(strings))

#do something to each element, e.g. convert to uppercase
for i in range(len(strings)):
    strings[i] = strings[i].upper()
#    print(i, ":", strings[i])

print(strings)


#(repeatedly) search a list. There is no .find() method!
item = input("Enter string to search for in the array: (-999 to quit) ")
while item != "-999":
    if item in strings:    
        print("Found it (first) at index:", strings.index(item))  #index: must exist!
        print("#times in the list:", strings.count(item))   #count: 0 OK
    else:
        print("not found")
    item = input("Enter string to search for in the array:  (-999 to quit) ")

#sort the list.  Type of elements must be same.
strings.sort()
print(strings)

#reverse the list (does not sort)
strings.reverse()
print(strings)

#Deleting elements:
# pop() deletes and returns the last element
lastone = strings.pop()
print(lastone)
#list is one shorter
print(strings, " Length:", len(strings))

# pop(index) deletes and returns the index_th element
del_i = int(input("Enter the index of the element to remove from the list: "))
removed = strings.pop(del_i)
print(removed)
print(strings, " Length:", len(strings))

'''
12
dog
cat
elephant
camel
ant
zebra
wolf
raccoon
chipmunk
mouse
whale
hippotamus
'''