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Sum of Left Leaves
Bookmark
Input
Example 1 (sum=24)
Example 2 (sum=4)
Right Leaves Don't Count (sum=8)
Single Node (sum=0)
Custom
tree
=
[3, 9, 20, null, null, 15, 7]
3
9
20
15
7
sum = 0
stack
leaves
sum every
left leaf
in the tree
algo
master
.
io
Step:
Start: sum the values of every left leaf
0 / 12
Input
Example 1 (sum=24)
Example 2 (sum=4)
Right Leaves Don't Count (sum=8)
Single Node (sum=0)
Custom
tree
=
[3, 9, 20, null, null, 15, 7]
0 / 12
3
9
20
15
7
sum = 0
stack
leaves
sum every
left leaf
in the tree
algo
master
.
io
Step:
Start: sum the values of every left leaf
