Write a program to perform Consecutive prefix overlap concatenation Using endswith() + join() + list comprehension + zip() + loop


Topic: Write a program to perform Consecutive prefix overlap concatenation Using endswith() + join() + list comprehension + zip() + loop

Solution

  
def help_fnc(i, j): 
    for ele in range(len(j), -1, -1): 
        if i.endswith(j[:ele]): 
            return j[ele:] 
  
test_list = ["India", "gone", "new", "best"] 
  
print("The original list is : " + str(test_list)) 
  
res = ''.join(help_fnc(i, j) for i, j in zip([''] + 
                           test_list, test_list)) 
  
print("The resultant joined string : " + str(res)) 
def isValidSudoku(board):
    rows = [{} for i in range(9)]
    columns = [{} for i in range(9)]
    boxes = [{} for i in range(9)]
        
    for i in range(9):
        for j in range(9):
            num = board[i][j]
            if num != '.':
                num = int(num)
                box_index = (i//3)*3 + (j//3)
                rows[i][num] = rows[i].get(num, 0) + 1
                columns[j][num] = columns[j].get(num, 0) + 1
                boxes[box_index][num] = boxes[box_index].get(num, 0) + 1       
                if rows[i][num] > 1 or columns[j][num] > 1 or boxes[box_index][num] > 1:
                    print(" i= {0} j = {1} box_index ={2}".format(i,j,box_index))
                    print("rows[i]: ", rows[i])
                    print("columnns[j]: ", columns[j])
                    print("boxes[box_index]: ", boxes[box_index])
                    return False
                    
    return True
	
	



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