How do I generate random numbers in an array that add up to a defined total?

Question

I need to randomly generate an array with 7 slots in Java. All these slots must have a value of at LEAST 1, but combined, have a total value of another defined number. They

Answer 1

Adding on to what @Kon said, you could use two random numbers rather than one for more randomness. That is:

Fill every element in the array with the value 1
valuesToDistribute = a - array.length-1
randomIndex = Roll a number between 0 and array.length-1
randomValue = Roll a number between 1 and valuesToDistribute
Add to randomIndex the value randomValue
Subtract randomValue from valuesToDistribute
Repeat until valuesToDistribute = 0