题解 | 查找两个字符串a,b中的最长公共子串

while True:
    try:
        a,b = input(),input()
        if len(a) > len(b):
            a,b = b,a
        res = ''
        for i in range(len(a)):
            for j in range(i+1,len(a)+1):
                if a[i:j] in b and j-i > len(res):
                    res = a[i:j]
        print(res)
    except:
        break