Java Community | Help. Code. Learn.•3y ago

2D List - how to check for values?

I have a hard time using a 1D List to check contents of a 2D List. For example, if I have the following input as 2D int List, and I have a 1D int List that contains all the valid numbers. If it is :

java 
//2D List example input
[
 [1, 2, -3]
 [4,-3,-1]
 [3, 1, -2]
]

//1D List example solution
[1,2,-3,4]

java 
//2D List example input
[
 [1, 2, -3]
 [4,-3,-1]
 [3, 1, -2]
]

//1D List example solution
[1,2,-3,4]

Is there a way to go through the 2D List, such that I can verify if at least one number in each of the list has a matching number in the solution list? Ie., a -1 in 2D List is false, since solution expects a positive 1. A 2 in 2D List is true, since the solution expects a positive 2. A 3 in the 2D List is false, as solution expects a negative three, ie -3.
So I would want to check for something like the following:

(
  ((1==1: TRUE) OR (2==2: TRUE) OR (-3==3: FALSE)): TRUE
AND
  ((4==4: TRUE) OR (-3==-3 TRUE) OR (-1==1: FALSE)): TRUE
AND
  ((3==-3: FALSE) OR (1==1: TRUE) OR (-2==2: FALSE)): TRUE
): TRUE

(
  ((1==1: TRUE) OR (2==2: TRUE) OR (-3==3: FALSE)): TRUE
AND
  ((4==4: TRUE) OR (-3==-3 TRUE) OR (-1==1: FALSE)): TRUE
AND
  ((3==-3: FALSE) OR (1==1: TRUE) OR (-2==2: FALSE)): TRUE
): TRUE

2 Replies

Kyo-chan•3y ago

That example of yours is dreadfully unclear

Unknown User•3y ago

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2D List - how to check for values?

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