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I need a program that uses nested loops and gives all the combination of the four digit number. For ex: 1234 should give the output 1234 1243 1324 1342 1423 1432 2134 2143 2314 2341 2413 2431 3124 3142 3214 3241 3412 3421 4123 4132 4213 4231 4312 4321
The output can be in any format but it should not give any extra number other than the above numbers neihter should it leave any of the other numbers. A sample code for the abobe problem is given below but the code needs a lot of modification. Kindly help me in doint so.