Fibonacci number

Text Justification

Sum of Two

String Reformatter

String Permutations

Sum in Range

11/13 Execution time limit exceeded on test 13: Program exceeded the execution time limit. Make sure that it completes execution in a few seconds for any possible input.

strstr

23/27 Execution time limit exceeded on test 24: Program exceeded the execution time limit. Make sure that it completes execution in a few seconds for any possible input.

Sum Subsets

9/12 Execution time limit exceeded on test 10: Program exceeded the execution time limit. Make sure that it completes execution in a few seconds for any possible input.

First Duplicate

First Not Repeating Character

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