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The above algorithm would fail for 15432. Result 52341. Expected 21345.
- sobu86 February 06, 2012The following step is invalid in algorithm above.
"- Swap the digit on the left of the 'hotspot' with the last digit of the new number."
Instead use,
"- Swap the digit on the left of the 'hotspot' with the first digit right to itself that is greater than itself"
E.g.,
after sorting the initial number 15432, you would get 12345.
Now replace 1 with first digit right to itself that is larger than itself, i.e. 2.
which gives 21345