Don't use buffer

Submission Result: Compile Error

Line 72: illegal start of type

Submission Result: Compile Error

Line 29: cannot find symbol: variable available

candidates

Submission Result: Compile Error

Line 52: cannot find symbol: method length()

Submission Result: Wrong Answer

Input:	[1], 1
Output:	[]
Expected:	[[1]]


Submission Result: Compile Error

Line 57: cannot find symbol: method combinationSum(int[],int,int)