I have 1 doubt. My below code is working fine keypad problem but in line 22 if I will initialize j = j + 1 before recursion call like firstly I will write it as j = j+1; then I will pass into the recursion call names(inp, out, i+1, j). It will give the wrong output why?
Recursion Problem
You still need j for line 21, if you change the value of j by j=j+1 then you need to change it back to j=j-1 after the recursion call, for the next iteration of the loop. this is called backtracking.
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