Given a string S. For each index i(1<=i<=N-1), erase it if s[i] is equal to s[i-1] in the string.
Example 1:
Input:
S = aabb
Output: ab
Explanation: 'a' at 2nd position is
appearing 2nd time consecutively.
Similiar explanation for b at
4th position.
Example 2:
Input:
S = aabaa
Output: aba
Explanation: 'a' at 2nd position is
appearing 2nd time consecutively.
'a' at fifth position is appearing
2nd time consecutively.

Your Task:
You dont need to read input or print anything. Complete the function removeConsecutiveCharacter() which accepts a string as input parameter and returns modified string.

Expected Time Complexity: O(|S|).
Expected Auxiliary Space: O(|S|).

Constraints:
1<=|S|<=10^{5}
All characters are lowercase alphabets.

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见题面