1. (简答题) Write a program to count the occurrences of each letter in an array of characters. Here is a sample run. ------------------------------------------------------ Enter the string : abcddcabae a occurs 3 times in the string, b occurs 2 times in the string, c occurs 2 times in the string, d occurs 2 times in the string, e occurs 1 times in the string,

以下是 Python 代码实现，可以用来统计一个字符数组中每个字符的出现次数：

string = input("Enter the string: ")
freq = {}
for char in string:
    if char in freq:
        freq[char] += 1
    else:
        freq[char] = 1

for char, count in freq.items():
    print(char, "occurs", count, "times in the string.")

运行结果：

Enter the string: abcddcabae
a occurs 3 times in the string.
b occurs 2 times in the string.
c occurs 2 times in the string.
d occurs 2 times in the string.
e occurs 1 times in the string.