If the numbers 1 to 5 are written out in words: one, two, three, four, five, then there are 3 + 3 + 5 + 4 + 4 = 19 letters used in total.
If all the numbers from 1 to 1000 (one thousand) inclusive were written out in words, how many letters would be used?
NOTE: Do not count spaces or hyphens. For example, 342 (three hundred and forty-two) contains 23 letters and 115 (one hundred and fifteen) contains 20 letters. The use of "and" when writing out numbers is in compliance with British usage.
public class BritishLetter {
public static final String ONE="one";
public static final String TWO="two";
public static final String THREE="three";
public static final String FOUR="four";
public static final String FIVE="five";
public static final String SIX="six";
public static final String SEVEN="seven";
public static final String EIGHT="eight";
public static final String NINE="nine";
public static final String TEN="ten";
public static final String ELEVEN="eleven";
public static final String TWELVE="twelve";
public static final String THIRTEEN="thirteen";
public static final String FOURTEEN="fourteen";
public static final String FIFTEEN="fifteen";
public static final String SIXTEEN="sixteen";
public static final String SEVENTEEN="seventeen";
public static final String EIGHTEEN="eighteen";
public static final String NINETEEN="nineteen";
public static final String TWENTY="twenty";
public static final String THIRTY="thirty";
public static final String FORTY="forty";
public static final String FIFTY="fifty";
public static final String SIXTY="sixty";
public static final String SEVENTY="seventy";
public static final String EIGHTY="eighty";
public static final String NINETY="ninety";
public static final String HUNDRED="hundred";
public static final String AND_LENGTH="and";
public static final String THOUSAND="thousand";
public static void main(String args[]){
int sum=0;
for(int i=1;i<1000;i++){
if(i<10){
sum+=numUnit(i);
System.out.println("long="+numUnit(i)+",i="+i);
}else if(i>=10&&i<100){
sum+=numDecade(i);
System.out.println("long=="+numDecade(i)+",i="+i);
}else if(i>=100){
sum+=numHundred(i);
System.out.println("long==="+numHundred(i)+",i="+i);
}
}
System.out.println(sum+THOUSAND.length()+ONE.length());
System.out.println(numHundred(342));
System.out.println(numHundred(115));
}
public static int numUnit(int n){
int num=0;
if(n==1){
num=ONE.length();
}else if(n==2){
num=TWO.length();
}else if(n==3){
num=THREE.length();
}else if(n==4){
num=FOUR.length();
}else if(n==5){
num=FIVE.length();
}else if(n==6){
num=SIX.length();
}else if(n==7){
num=SEVEN.length();
}else if(n==8){
num=EIGHT.length();
}else if(n==9){
num=NINE.length();
}
return num;
}
public static int numDecade(int n){
int num=0;
if(n/10==0){
num=numUnit(n);
}else if(n/10==1){
if(n==10){
num=TEN.length();
}else if(n==11){
num=ELEVEN.length();
}else if(n==12){
num=TWELVE.length();
}else if(n==13){
num=THIRTEEN.length();
}else if(n==14){
num=FOURTEEN.length();
}else if(n==15){
num=FIFTEEN.length();
}else if(n==16){
num=SIXTEEN.length();
}else if(n==17){
num=SEVENTEEN.length();
}else if(n==18){
num=EIGHTEEN.length();
}else if(n==19){
num=NINETEEN.length();
}
}else if(n/10==2){
num=TWENTY.length()+numUnit(n%10);
}else if(n/10==3){
num=THIRTY.length()+numUnit(n%10);
}else if(n/10==4){
num=FORTY.length()+numUnit(n%10);
}else if(n/10==5){
num=FIFTY.length()+numUnit(n%10);
}else if(n/10==6){
num=SIXTY.length()+numUnit(n%10);
}else if(n/10==7){
num=SEVENTY.length()+numUnit(n%10);
}else if(n/10==8){
num=EIGHTY.length()+numUnit(n%10);
}else if(n/10==9){
num=NINETY.length()+numUnit(n%10);
}
return num;
}
public static int numHundred(int n){
int num=0;
if(n/100==1&&n!=100){
num=ONE.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==2&&n!=200){
num=TWO.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==3&&n!=300){
num=THREE.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==4&&n!=400){
num=FOUR.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==5&&n!=500){
num=FIVE.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==6&&n!=600){
num=SIX.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==7&&n!=700){
num=SEVEN.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==8&&n!=800){
num=EIGHT.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n/100==9&&n!=900){
num=NINE.length()+HUNDRED.length()+AND_LENGTH.length()+numDecade(n%100);
}else if(n==100){
num=ONE.length()+HUNDRED.length();
}else if(n==200){
num=TWO.length()+HUNDRED.length();
}else if(n==300){
num=THREE.length()+HUNDRED.length();
}else if(n==400){
num=FOUR.length()+HUNDRED.length();
}else if(n==500){
num=FIVE.length()+HUNDRED.length();
}else if(n==600){
num=SIX.length()+HUNDRED.length();
}else if(n==700){
num=SEVEN.length()+HUNDRED.length();
}else if(n==800){
num=EIGHT.length()+HUNDRED.length();
}else if(n==900){
num=NINE.length()+HUNDRED.length();
}
return num;
}
}
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