for循环 for (StateId s = f_parent,d = kNoStateId;s = kNoStateId;d = s,s = parent[s]) 这个循环怎么解释,我是菜鸟,

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for循环 for (StateId s = f_parent,d = kNoStateId;s = kNoStateId;d = s,s = parent[s]) 这个循环怎么解释,我是菜鸟,

for循环 for (StateId s = f_parent,d = kNoStateId;s = kNoStateId;d = s,s = parent[s]) 这个循环怎么解释,我是菜鸟,
for循环
for (StateId s = f_parent,d = kNoStateId;
s = kNoStateId;
d = s,s = parent[s])
这个循环怎么解释,我是菜鸟,

for循环 for (StateId s = f_parent,d = kNoStateId;s = kNoStateId;d = s,s = parent[s]) 这个循环怎么解释,我是菜鸟,
进入循环时,做StateId s = f_parent, d = kNoStateId; //相当于常见的i=0;
循环结束的判断条件是s != kNoStateId; //相当于常见的i