How to Solve "First Unique Character In A String" ? - LeetCode 387 Javascript
How to Solve "First Unique Character In A String" on LeetCode?
Problem: #387 First Unique Character in a String
Difficulty: Easy
Language: #javascript
Time Complexity: O(n)
Space Complexity: O(n)
Pseudo Code:
1. Create object "characterCount".
2. Loop through s.
a. Create condition to see if the current character in "s" is in the "characterCount". If not, add the key of current character and a value of 1.
b. Create condition if it the current character in "s" is in the "characterCount", we increment value by 1.
3. Loop through s.
a. Create condition to see if the value of that current character in the "characterCount" is equal to one. Return the i.
4. Return -1
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