|
64 | 64 | *[字符串：替换空格](https://mp.weixin.qq.com/s/t0A9C44zgM-RysAQV3GZpg) |
65 | 65 | *[字符串：花式反转还不够！](https://mp.weixin.qq.com/s/X3qpi2v5RSp08mO-W5Vicw) |
66 | 66 | *[字符串：反转个字符串还有这个用处？](https://mp.weixin.qq.com/s/PmcdiWSmmccHAONzU0ScgQ) |
67 | | -*[字符串：KMP是时候上场了](https://mp.weixin.qq.com/s/70OXnZ4Ez29CKRrUpVJmug) |
| 67 | +*[视频来了！！带你学透KMP算法（理论篇&代码篇）](https://mp.weixin.qq.com/s/SFAs4tbo2jDgzST9AsF2xg) |
68 | 68 | *[字符串：都来看看KMP的看家本领！](https://mp.weixin.qq.com/s/Gk9FKZ9_FSWLEkdGrkecyg) |
69 | | -*[字符串：听说你对KMP有这些疑问？](https://mp.weixin.qq.com/s/mqx6IM2AO4kLZwvXdPtEeQ) |
70 | 69 | *[字符串：KMP算法还能干这个！](https://mp.weixin.qq.com/s/lR2JPtsQSR2I_9yHbBmBuQ) |
71 | | -*[字符串：前缀表不右移，难道就写不出KMP了？](https://mp.weixin.qq.com/s/p3hXynQM2RRROK5c6X7xfw) |
72 | 70 | *[字符串：总结篇！](https://mp.weixin.qq.com/s/gtycjyDtblmytvBRFlCZJg) |
73 | 71 |
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74 | 72 | * 双指针法 |
|
152 | 150 | *[视频来了！！带你学透回溯算法（理论篇）](https://mp.weixin.qq.com/s/wDd5azGIYWjbU0fdua_qBg) |
153 | 151 | *[视频来了！！回溯算法：组合问题](https://mp.weixin.qq.com/s/a_r5JR93K_rBKSFplPGNAA) |
154 | 152 | *[视频来了！！回溯算法：组合问题的剪枝操作](https://mp.weixin.qq.com/s/CK0kj9lq8-rFajxL4amyEg) |
| 153 | +*[视频来了！！回溯算法：组合总和](https://mp.weixin.qq.com/s/4M4Cr04uFOWosRMc_5--gg) |
155 | 154 | *[回溯算法：重新安排行程](https://mp.weixin.qq.com/s/3kmbS4qDsa6bkyxR92XCTA) |
156 | 155 | *[回溯算法：N皇后问题](https://mp.weixin.qq.com/s/lU_QwCMj6g60nh8m98GAWg) |
157 | 156 | *[回溯算法：解数独](https://mp.weixin.qq.com/s/eWE9TapVwm77yW9Q81xSZQ) |
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