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Push — master ( ad489a...da6e2c )
by Jinyun
02:28
created

ExcelSheetColumnNumber::titleToNumber2()   A

↳ Parent: ExcelSheetColumnNumber

Complexity

Conditions 4
Paths 5

Size

Total Lines 14
Code Lines 8

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
eloc 8
c 1
b 0
f 0
dl 0
loc 14
rs 10
cc 4
nc 5
nop 1
1 
<?php
2 

            


            
                                                                                                            
                            
            
                                    
            
            

                
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declare(strict_types=1);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace leetcode;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class ExcelSheetColumnNumber

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public static function titleToNumber(string $title): int

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        if (empty($title)) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            return 0;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        [$ans, $n] = [0, strlen($title)];

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        for ($i = 0; $i < $n; $i++) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            $ans *= 26;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            $ans += ord(strtoupper($title[$i])) - ord('A') + 1;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return $ans;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    public static function titleToNumber2(string $title): int

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        if (empty($title)) {

            


            
                                                                        
                            
            
                                    
            
            

                
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            return 0;

            


            
                                                                        
                            
            
                                    
            
            

                
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        }

            


            
                                                                        
                            
            
                                    
            
            

                
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        [$ans, $map] = [0, []];

            


            
                                                                        
                            
            
                                    
            
            

                
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        for ($i = 1; $i < 27; $i++) {

            


            
                                                                        
                            
            
                                    
            
            

                
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            $map[strtoupper(chr($i + 65 - 1))] = $i;

            


            
                                                                        
                            
            
                                    
            
            

                
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        }

            


            
                                                                        
                            
            
                                    
            
            

                
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        for ($i = 0, $n = strlen($title); $i < $n; $i++) {

            


            
                                                                        
                            
            
                                    
            
            

                
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            $ans = $ans * 26 + $map[strtoupper($title[$i])];

            


            
                                                                        
                            
            
                                    
            
            

                
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        }

            


            
                                                                        
                            
            
                                    
            
            

                
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        return $ans;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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