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Excel Sheet Column Title
Given a positive integer, return its corresponding column title as appear in an Excel sheet.
For example:
1 -> A 2 -> B 3 -> C ... 26 -> Z 27 -> AA 28 -> AB
Credits:
Special thanks to @ifanchu for adding this problem and creating all test cases.
public class Solution { public String convertToTitle(int n) { char a[]=new char[27]; a[0]='A'; for(int i=1;i<=26;i++){ a[i]=(char)(a[0]+i-1); } if(n<=26) return (a[n]+""); String s=""; while(n>26){ int r = n%26; if(r==0){ r=26; n-=26; } s = a[r]+s; n/=26; } s = a[n]+s; return s; } }
Excel Sheet Column Title
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