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中级

Most Common Character

未完成
中级参考 代码结构已给出，请填写 ____ 处 
# Write your solution here
def solve(____):
    most_common = "____"
    count = ____
    for i in string:
        if string.count(____) > count:
            count = string.count(____)
            most_common = i 
    return most_common   

if __name__ == "____":
    first_string = "____"
    print(solve(____))

    second_string = "____"
    print(solve(____))

示例

输入
print(solve(first_string)); print(solve(second_string))
期望输出
b
e
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