EuniceMadya · April 22, 2019 07:56
diff --git a/2-dimentional-array.py b/2-dimentional-array.py
 ar = [[-1 for i in range (5)] for j in range (10)]       # this means creating an array with 5 cols and 10 rows
 
 ar[9][4]    #this would result in -1, means the 10th row, 5th col, i.e. the right-bottom corner of the array
 ar[4][9]
 
 len(ar)     #number of rows
 len(ar[0])  #number of cols
	ar = [[-1 for i in range (5)] for j in range (10)] # this means creating an array with 5 cols and 10 rows

	ar[9][4] #this would result in -1, means the 10th row, 5th col, i.e. the right-bottom corner of the array
	ar[4][9]

	len(ar) #number of rows
	len(ar[0]) #number of cols
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