#!usr/bin/env python #encoding:utf-8 ''''' __Author__:沂水寒城 功能:zigzag_pattern T W Q K N D X Z S V B G A C convert("TNGDWXAZQSCVBK", 3) should return "TWQBNDXZSVKGAC". ''' def convert_test(one_str,num): ''''' ''' mod=len(one_str)%(num+1) if mod==0: cols=(len(one_str)/(num+1))*2 else: cols=(len(one_str)/(num+1))*2+1 rows=num #print 'rows, cols', rows, cols matrix=[] for i in range(rows): matrix.append([0]*cols) one_str_list=list(one_str) for j in range(cols): if j%2==0: for i in range(rows): if len(one_str_list): matrix[i][j]=one_str_list.pop(0) else: matrix[1][j]=one_str_list.pop(0) #print matrix # for one in matrix: # one_list=[str(onec) for onec in one] # print ' '.join(one_list) res='' for one_list in matrix: one_list=[str(one) for one in one_list] res+=''.join(one_list) return ''.join(res.split('0')) if __name__ == '__main__': print convert_test("TNGDWXAZQSCVBK", 3) print convert_test("PAYPALISHIRING", 2) print convert_test("PAYPALISHIRING", 4)
结果如下:
TWQBNDXZSVKGAC
PPIINAYALSHRIG
PLRAAIIIYSNPHG
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