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Please help me with solving this array problem (Min Steps in Infinite Grid)

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millieCreated:
millie#1
You are in an infinite 2D grid where you can move in any of the 8 directions : (x,y) to (x+1, y), (x - 1, y), (x, y+1), (x, y-1), (x-1, y-1), (x+1,y+1), (x-1,y+1), (x+1,y-1) You are given a sequence of points and the order in which you need to cover the points. Give the minimum number of steps in which you can achieve it. You start from the first point. Example : Input : [(0, 0), (1, 1), (1, 2)] Output : 2 It takes 1 step to move from (0, 0) to (1, 1). It takes one more step to move from (1, 1) to (1, 2). Link - https://www.interviewbit.com/problems/min-steps-in-infinite-grid/
Nathaniel#2
Here's a simple solution: 
ACLS

'SETUP
RESTORE @POINTS
READ NUMBER
DIM POINTS_XY[NUMBER*2]
FOR I=0 TO NUMBER*2-1
 READ POINTS_XY[I]
NEXT

'OUTPUT
?MIN_STEPS(POINTS_XY)

'FUNCTION
DEF MIN_STEPS(ARRAY_XY)
 VAR I,STEPS,LENGTH=LEN(ARRAY_XY)/2-1
 FOR I=0 TO LENGTH-1
  VAR DIST_X=ABS(ARRAY_XY[I*2  ]-ARRAY_XY[I*2+2])
  VAR DIST_Y=ABS(ARRAY_XY[I*2+1]-ARRAY_XY[I*2+3])
  INC STEPS,MAX(DIST_X,DIST_Y)
 NEXT
 RETURN STEPS
END

'INPUT
@POINTS
DATA 3 'NUMBER OF POINTS
DATA 0,0
DATA 1,1
DATA 1,2
millie#3
Here's a simple solution: 
ACLS

'SETUP
RESTORE @POINTS
READ NUMBER
DIM POINTS_XY[NUMBER*2]
FOR I=0 TO NUMBER*2-1
 READ POINTS_XY[I]
NEXT

'OUTPUT
?MIN_STEPS(POINTS_XY)

'FUNCTION
DEF MIN_STEPS(ARRAY_XY)
 VAR I,STEPS,LENGTH=LEN(ARRAY_XY)/2-1
 FOR I=0 TO LENGTH-1
  VAR DIST_X=ABS(ARRAY_XY[I*2  ]-ARRAY_XY[I*2+2])
  VAR DIST_X=ABS(ARRAY_XY[I*2+1]-ARRAY_XY[I*2+3])
  INC STEPS,MAX(DIST_X,DIST_Y)
 NEXT
 RETURN STEPS
END

'INPUT
@POINTS
DATA 3 'NUMBER OF POINTS
DATA 0,0
DATA 1,1
DATA 1,2
Thank you :)
12Me21#4
I believe this should work: 
DIM TEST[3,2]
COPY TEST,@POINTS
?STEPS(TEST)

@POINTS
DATA 0,0
DATA 1,1
DATA 1,2

DEF STEPS(POINTS[])
 VAR SUM=0
 VAR I
 FOR I=1 TO LEN(POINTS)/2-1
  INC SUM,MAX(ABS(POINTS[I,0]-POINTS[I-1,0]),ABS(POINTS[I,1]-POINTS[I-1,1]))
 NEXT
 RETURN SUM
END
EDIT: I didn't look at Nathaniel's answer until after I posted this, and it turns out he did basically the same thing.