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what this line of code mean?

what this line of code mean?# Java - 爪哇娇娃

z*n2004-11-30 08:11

1 楼

int t = (tree.left == null) ? 0 : tree.left.Size;
Here: tree.left.Size refers to the nodes of the left branch of the tree.
But what does ? 0: tree.left.Size mean? Millions of thanks for your reply.

c*s2004-11-30 08:11

2 楼

t = a?b:c
equals to
if(a)
t=b;
else
t=c

【在 z****n 的大作中提到】

: int t = (tree.left == null) ? 0 : tree.left.Size;
: Here: tree.left.Size refers to the nodes of the left branch of the tree.
: But what does ? 0: tree.left.Size mean? Millions of thanks for your reply.