Integer to Roman
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public class Solution { public String intToRoman(int num) { String[][] c= new String[][]{{"0","I","II","III","IV","V","VI","VII","VIII","IX"},{"0","X","XX","XXX","XL","L","LX" ,"LXX","LXXX","XC"},{"0","C","CC","CCC","CD","D", "DC","DCC","DCCC","CM"},{"0","M","MM","MMM"}}; int tmp=num; String st = ""; if(tmp/1000!=0) st+=c[3][tmp/1000]; if((tmp%1000)/100!=0) st+=c[2][(tmp%1000)/100]; if((tmp%100)/10!=0) st+=c[1][(tmp%100)/10]; if(tmp%10!=0) st+=c[0][tmp%10]; return st; }}
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