Find all combinations that add upto given number

#1


EXPLAIN THE SOLUTION PLS
I CANT UNDERSTAND IT

#2

please help asap on this prob

#3

hi
In this we are using recursion method
as in the find combination function there are 4 variable array,index,num,reducednum
so it is intutive the number in the array does not exceeds n
now u have to start with 1 as minimum
now to have increasing sequence pre varible is describe like that
also now if u get prev now taking a loop from prev to n and adding 1 element with gave u the desired reult

#4

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