Given a number, remove n characters to find the minimum number.
Ex 1: 19345 , n = 3
Outout = 13
Explanation: Removing 9,4,5 characters results in minimum number
Ex 2: 100200, n = 1
output = 200
Explanation: Removing 1 results in minimum number
The hint was to use 2 pointers method. Appreacite any solutions to this.
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