https://github.com/interviewdiscussion/files/blob/ceb7efe32a4236b8bac34146c4b16e46ae7144aa/Indeed%20Onsite%E8%AE%B0%E5%BD%95/Git%20Commit.java#L63 the case will fail when try to find LCA for node1 and node5.
files/Indeed Onsite记录/Git Commit.java
Line 63 in ceb7efe
the case will fail when try to find LCA for node1 and node5.