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Problems Two Pointers

Remove Duplicates from Sorted Array

Easy

4/7

EasyTwo PointersLeetCode #26

Remove Duplicates (sorted)

Slow/fast writer pointer. Return new length.

Examples

Example 1

Input

3
1 1 2

Output

2
1 2

Example 2

Input

10
0 0 1 1 1 2 2 3 3 4

Output

5
0 1 2 3 4

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