LeetCode --Excel Sheet Column Title

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public class Solution {
    public string ConvertToTitle(int n) {
        var ret = string.Empty;
    	while(n > 26){
    		var x = n % 26;
    		n /= 26;
    		if(x != 0){
    			ret = Char(x) + ret;
    		}
    		else{
    			ret = Char(26) + ret;
    			n--;
    		}
    		
    	}
    	if(n > 0){
    		ret = Char(n) + ret;
    	}
    	
    	return ret;
}


private char Char(int x){
	return (char)(‘A‘ + x - 1);
}


}

LeetCode --Excel Sheet Column Title

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原文地址：http://blog.csdn.net/lan_liang/article/details/50144599