Update README.md

Author: Lokesh598

README.md

@@ -2,15 +2,24 @@
 
 Constraints -
 Input | Worst Time Complexity
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 n ≤ 12 | O(n!)
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 n ≤ 25 | O(2^n)
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 n ≤ 100 | O(n^4)
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 n ≤ 500 | O(n^3)
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 n ≤ 10^4 | O(n^2)
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 n ≤ 10^6 | O(n log n)
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 n ≤ 10^8 | O(n)
+
 n > 10^8 | O(log n) or O(1)
 
+
 ## List of standard question
 
  - ## Array