从暴力枚举到KMP算法例1 给定两个字符串 S1S1S1 和 S2S2S2,S2S2S2是S1S1S1的子串,输出S2S2S2在S1S1S1中所有的起始下标Zxgaer2024/7/19大约 3 分钟KMP算法字符串