Question: Use a dictionary to implement anO ( n ) solution for Two Sum ( click the title Two Sum to be linked to leetcode )

Use a dictionary to implement anO
(
n
)
solution for Two Sum
(
click the title
Two Sum
to be linked to leetcode
)
.
In particular,place appropriate keys and values in a dictionary so you can use the O
(
1
)
time
i s an element of
operation
.
Additional Requirements: Explain how your algorithm work sand why it isO
(
n
)
.

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