我在解决问题17时遇到了问题。
如果数字1到5用文字写出：一，二，三，四，五，那么总共有3 + 3 + 5 + 4 + 4 = 19个字母。
如果所有1到1000（一千）的数字都用文字写出来，会用多少个字母？
注意：不要计算空格或连字符。例如，342（三百四十二）包含23个字母，115（一百一十五）包含20个字母 字母。在写出数字时使用“和”符合英国的用法。
我的节目输出是17722但是PE说这是一个错误的答案。我究竟做错了什么？这是我的代码。
public class NumberLetter {
public static void main(String[] args) {
String[] firstNormals = {"one","two","three","four","five","six","seven","eight","nine"};
String[] secondNormals = {"ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"};
String[] thirdNormals = {"twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety"};
String[] fourthNormals = {"oneHundred","twoHundred","threeHundred","fourHundred","fiveHundred","sixHundred","sevenHundred","eightHundred","nineHundred"};
String fifthNormal = "oneThousand";
long first = 0;
long second = 0;
long third = 0;
long fourth = 0;
for (int i = 0; i < firstNormals.length; i++) {
first += firstNormals[i].length();
}
for (int i = 0; i < secondNormals.length; i++) {
second += secondNormals[i].length();
}
for (int i = 0; i < thirdNormals.length; i++) {
third += thirdNormals[i].length();
}
for (int i = 0; i < fourthNormals.length; i++) {
fourth += fourthNormals[i].length()+third+second+first;
}
for (String thirdCharacters : thirdNormals) {
for (String firstCharacters : firstNormals) {
third += thirdCharacters.length()+firstCharacters.length();
}
}
for (String fourthCharacters : fourthNormals) {
for (String thirdCharacters : thirdNormals) {
for (String firstCharacters : firstNormals) {
fourth += fourthCharacters.length()+3+thirdCharacters.length()+firstCharacters.length();
}
}
}
long sum = first+second+third+fourth+fifthNormal.length();
System.out.println(sum);
}
}
我怎样才能提高效率呢？提前谢谢。
答案 0 :(得分：1)
这里有一个很好的解释：
http://www.mathblog.dk/project-euler-17-letters-in-the-numbers-1-1000/
您可以使用那里提供的逻辑来提供更优雅，更有效的解决方案。
关于您的具体解决方案，我不确定第四个循环正在做什么。看起来你正试图添加100,200,300，......，以及101,102,103，......，201,202,203 ......，以及110,111,112 ，...，210,211,212，......，以及120,130,140，......，220,230,240 ......如果是这样，那么你不算全部他们。该循环仅运行9次。
答案 1 :(得分：1)
使用Map的解决方案：
import java.util.HashMap;
import java.util.Map;
public class P17 {
static final int N = 1000;
static Map<Integer, Integer> numbers = new HashMap<>();
static final int HUNDRED_LENGTH = "hundred".length();
static final int AND_LENGTH = "and".length();
public static void main(String[] args) {
addNumber(1, "one");
addNumber(2, "two");
addNumber(3, "three");
addNumber(4, "four");
addNumber(5, "five");
addNumber(6, "six");
addNumber(7, "seven");
addNumber(8, "eight");
addNumber(9, "nine");
addNumber(10, "ten");
addNumber(11, "eleven");
addNumber(12, "twelve");
addNumber(13, "thirteen");
addNumber(14, "fourteen");
addNumber(15, "fifteen");
addNumber(16, "sixteen");
addNumber(17, "seventeen");
addNumber(18, "eighteen");
addNumber(19, "nineteen");
addNumber(20, "twenty");
addNumber(30, "thirty");
addNumber(40, "forty");
addNumber(50, "fifty");
addNumber(60, "sixty");
addNumber(70, "seventy");
addNumber(80, "eighty");
addNumber(90, "ninety");
addNumber(1000, "oneThousand");
int sum = 0;
// x01 - x99 -> 10 times
for ( int i = 1 ; i < 20 ; i++ ) {
sum+=numbers.get(i);
}
for ( int i = 20 ; i <= 99 ; i++ ) {
int u = i%10;
sum+=numbers.get((i/10)*10);
if ( u > 0 ) {
sum+=numbers.get(u);
}
}
sum*=10;
/* hundred */
for ( int i = 100 ; i < N ; i++ ) {
int h = i/100;
int r = i%100;
sum+=numbers.get(h);
sum+=HUNDRED_LENGTH;
if ( r > 0 ) {
sum+=AND_LENGTH;
}
}
sum+=numbers.get(N);
System.out.println(sum);
}
static void addNumber(int number, String numberAsString) {
numbers.put(number, numberAsString.length());
}
}
答案 2 :(得分：0)
你的for循环非常混乱，尝试使用基于方法的方法来执行常见任务。
由于您要计算每个String数组中的字母数，您可以这样做：
long first = lengthOf(firstNormals);
long second = lengthOf(secondNormals);
long third = lengthOf(thirdNormals);
//...rest of your code
private long lengthOf(String[] s){ //returns total number of alphabets in array
return Arrays.asList(s).toString().replaceAll( "\\W", "" ).length();
}
答案 3 :(得分：0)
代码需要一些逻辑来确定您正在查看的数字
一种粗略的方式，最多只能做1000 ..
public static void main(String[] args) {
String[] firstNormals = {"one","two","three","four","five","six","seven","eight","nine"};
String[] secondNormals = {"ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"};
String[] thirdNormals = {"twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety"};
String[] fourthNormals = {"oneHundred","twoHundred","threeHundred","fourHundred","fiveHundred","sixHundred","sevenHundred","eightHundred","nineHundred"};
String[] fifthNormal = {"oneThousand"};
List<String> numberStringList = new ArrayList<String>();
for (Integer i = 1; i <= 1000; i++) {
int length = i.toString().length();
if(length == 1){
int digitIndex = Integer.parseInt( new StringBuilder().append(i.toString().toCharArray()[0]).toString() );
numberStringList.add(firstNormals[digitIndex-1]);
} else if(length == 2){
int tenIndex = Integer.parseInt( new StringBuilder().append(i.toString().toCharArray()[0]).toString() );
int digitIndex = Integer.parseInt( new StringBuilder().append(i.toString().toCharArray()[1]).toString() );
//10, 11 ..
if(tenIndex == 1){
numberStringList.add(secondNormals[digitIndex]);
} else { //20, 30
numberStringList.add(thirdNormals[tenIndex-2]);
if(digitIndex != 0){
numberStringList.add(firstNormals[digitIndex-1]);
}
}
} else if(length == 3){
int hundredIndex = Integer.parseInt( new StringBuilder().append(i.toString().toCharArray()[0]).toString() );
numberStringList.add(fourthNormals[hundredIndex-1]);
int tenIndex = Integer.parseInt( new StringBuilder().append(i.toString().toCharArray()[1]).toString() );
int digitIndex = Integer.parseInt( new StringBuilder().append(i.toString().toCharArray()[2]).toString() );
if(tenIndex == 1){
numberStringList.add(secondNormals[digitIndex]);
} else if(tenIndex != 0){
numberStringList.add(thirdNormals[tenIndex-2]);
}
if(digitIndex != 0 && tenIndex != 1){
numberStringList.add(firstNormals[digitIndex-1]);
}
} else if(length > 3){
int thousandIndex = Integer.parseInt( new StringBuilder().append(i.toString().toCharArray()[0]).toString() );
numberStringList.add(fifthNormal[thousandIndex-1]);
}
}
}
那将输出
one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, twenty, one, twenty, two, twenty, three, twenty, four, twenty, five, twenty, six, twenty, seven, twenty, eight, twenty, nine, thirty, thirty, one, thirty, two, thirty, three, thirty, four, thirty, five, thirty, six, thirty, seven, thirty, eight, thirty, nine, forty, forty, one, forty, two, forty, three, forty, four, forty, five, forty, six, forty, seven, forty, eight, forty, nine, fifty, fifty, one, fifty, two, fifty, three, fifty, four, fifty, five, fifty, six, fifty, seven, fifty, eight, fifty, nine, sixty, sixty, one, sixty, two, sixty, three, sixty, four, sixty, five, sixty, six, sixty, seven, sixty, eight, sixty, nine, seventy, seventy, one, seventy, two, seventy, three, seventy, four, seventy, five, seventy, six, seventy, seven, seventy, eight, seventy, nine, eighty, eighty, one, eighty, two, eighty, three, eighty, four, eighty, five, eighty, six, eighty, seven, eighty, eight, eighty, nine, ninety, ninety, one, ninety, two, ninety, three, ninety, four, ninety, five, ninety, six, ninety, seven, ninety, eight, ninety, nine, oneHundred, oneHundred, one, oneHundred, two, oneHundred, three, oneHundred, four, oneHundred, five, oneHundred, six, oneHundred, seven, oneHundred, eight, oneHundred, nine, oneHundred, ten, oneHundred, eleven, oneHundred, twelve, oneHundred, thirteen, oneHundred, fourteen, oneHundred, fifteen, oneHundred, sixteen, oneHundred, seventeen, oneHundred, eighteen, oneHundred, nineteen, oneHundred, twenty, oneHundred, twenty, one, oneHundred, twenty, two, oneHundred, twenty, three, oneHundred, twenty, four, oneHundred, twenty, five, oneHundred, twenty, six, oneHundred, twenty, seven, oneHundred, twenty, eight, oneHundred, twenty, nine, oneHundred, thirty, oneHundred, thirty, one, oneHundred, thirty, two, oneHundred, thirty, three, oneHundred, thirty, four, oneHundred, thirty, five, oneHundred, thirty, six, oneHundred, thirty, seven, oneHundred, thirty, eight, oneHundred, thirty, nine, oneHundred, forty, oneHundred, forty, one, oneHundred, forty, two, oneHundred, forty, three, oneHundred, forty, four, oneHundred, forty, five, oneHundred, forty, six, oneHundred, forty, seven, oneHundred, forty, eight, oneHundred, forty, nine, oneHundred, fifty, oneHundred, fifty, one, oneHundred, fifty, two, oneHundred, fifty, three, oneHundred, fifty, four, oneHundred, fifty, five, oneHundred, fifty, six, oneHundred, fifty, seven, oneHundred, fifty, eight, oneHundred, fifty, nine, oneHundred, sixty, oneHundred, sixty, one, oneHundred, sixty, two, oneHundred, sixty, three, oneHundred, sixty, four, oneHundred, sixty, five, oneHundred, sixty, six, oneHundred, sixty, seven, oneHundred, sixty, eight, oneHundred, sixty, nine, oneHundred, seventy, oneHundred, seventy, one, oneHundred, seventy, two, oneHundred, seventy, three, oneHundred, seventy, four, oneHundred, seventy, five, oneHundred, seventy, six, oneHundred, seventy, seven, oneHundred, seventy, eight, oneHundred, seventy, nine, oneHundred, eighty, oneHundred, eighty, one, oneHundred, eighty, two, oneHundred, eighty, three, oneHundred, eighty, four, oneHundred, eighty, five, oneHundred, eighty, six, oneHundred, eighty, seven, oneHundred, eighty, eight, oneHundred, eighty, nine, oneHundred, ninety, oneHundred, ninety, one, oneHundred, ninety, two, oneHundred, ninety, three, oneHundred, ninety, four, oneHundred, ninety, five, oneHundred, ninety, six, oneHundred, ninety, seven, oneHundred, ninety, eight, oneHundred, ninety, nine, twoHundred, twoHundred, one, twoHundred, two, twoHundred, three, twoHundred, four, twoHundred, five, twoHundred, six, twoHundred, seven, twoHundred, eight, twoHundred, nine, twoHundred, ten, twoHundred, eleven, twoHundred, twelve, twoHundred, thirteen, twoHundred, fourteen, twoHundred, fifteen, twoHundred, sixteen, twoHundred, seventeen, twoHundred, eighteen, twoHundred, nineteen, twoHundred, twenty, twoHundred, twenty, one, twoHundred, twenty, two, twoHundred, twenty, three, twoHundred, twenty, four, twoHundred, twenty, five, twoHundred, twenty, six, twoHundred, twenty, seven, twoHundred, twenty, eight, twoHundred, twenty, nine, twoHundred, thirty, twoHundred, thirty, one, twoHundred, thirty, two, twoHundred, thirty, three, twoHundred, thirty, four, twoHundred, thirty, five, twoHundred, thirty, six, twoHundred, thirty, seven, twoHundred, thirty, eight, twoHundred, thirty, nine, twoHundred, forty, twoHundred, forty, one, twoHundred, forty, two, twoHundred, forty, three, twoHundred, forty, four, twoHundred, forty, five, twoHundred, forty, six, twoHundred, forty, seven, twoHundred, forty, eight, twoHundred, forty, nine, twoHundred, fifty, twoHundred, fifty, one, twoHundred, fifty, two, twoHundred, fifty, three, twoHundred, fifty, four, twoHundred, fifty, five, twoHundred, fifty, six, twoHundred, fifty, seven, twoHundred, fifty, eight, twoHundred, fifty, nine, twoHundred, sixty, twoHundred, sixty, one, twoHundred, sixty, two, twoHundred, sixty, three, twoHundred, sixty, four, twoHundred, sixty, five, twoHundred, sixty, six, twoHundred, sixty, seven, twoHundred, sixty, eight, twoHundred, sixty, nine, twoHundred, seventy, twoHundred, seventy, one, twoHundred, seventy, two, twoHundred, seventy, three, twoHundred, seventy, four, twoHundred, seventy, five, twoHundred, seventy, six, twoHundred, seventy, seven, twoHundred, seventy, eight, twoHundred, seventy, nine, twoHundred, eighty, twoHundred, eighty, one, twoHundred, eighty, two, twoHundred, eighty, three, twoHundred, eighty, four, twoHundred, eighty, five, twoHundred, eighty, six, twoHundred, eighty, seven, twoHundred, eighty, eight, twoHundred, eighty, nine, twoHundred, ninety, twoHundred, ninety, one, twoHundred, ninety, two, twoHundred, ninety, three, twoHundred, ninety, four, twoHundred, ninety, five, twoHundred, ninety, six, twoHundred, ninety, seven, twoHundred, ninety, eight, twoHundred, ninety, nine, threeHundred, threeHundred, one, threeHundred, two, threeHundred, three, threeHundred, four, threeHundred, five, threeHundred, six, threeHundred, seven, threeHundred, eight, threeHundred, nine, threeHundred, ten, threeHundred, eleven, threeHundred, twelve, threeHundred, thirteen, threeHundred, fourteen, threeHundred, fifteen, threeHundred, sixteen, threeHundred, seventeen, threeHundred, eighteen, threeHundred, nineteen, threeHundred, twenty, threeHundred, twenty, one, threeHundred, twenty, two, threeHundred, twenty, three, threeHundred, twenty, four, threeHundred, twenty, five, threeHundred, twenty, six, threeHundred, twenty, seven, threeHundred, twenty, eight, threeHundred, twenty, nine, threeHundred, thirty, threeHundred, thirty, one, threeHundred, thirty, two, threeHundred, thirty, three, threeHundred, thirty, four, threeHundred, thirty, five, threeHundred, thirty, six, threeHundred, thirty, seven, threeHundred, thirty, eight, threeHundred, thirty, nine, threeHundred, forty, threeHundred, forty, one, threeHundred, forty, two, threeHundred, forty, three, threeHundred, forty, four, threeHundred, forty, five, threeHundred, forty, six, threeHundred, forty, seven, threeHundred, forty, eight, threeHundred, forty, nine, threeHundred, fifty, threeHundred, fifty, one, threeHundred, fifty, two, threeHundred, fifty, three, threeHundred, fifty, four, threeHundred, fifty, five, threeHundred, fifty, six, threeHundred, fifty, seven, threeHundred, fifty, eight, threeHundred, fifty, nine, threeHundred, sixty, threeHundred, sixty, one, threeHundred, sixty, two, threeHundred, sixty, three, threeHundred, sixty, four, threeHundred, sixty, five, threeHundred, sixty, six, threeHundred, sixty, seven, threeHundred, sixty, eight, threeHundred, sixty, nine, threeHundred, seventy, threeHundred, seventy, one, threeHundred, seventy, two, threeHundred, seventy, three, threeHundred, seventy, four, threeHundred, seventy, five, threeHundred, seventy, six, threeHundred, seventy, seven, threeHundred, seventy, eight, threeHundred, seventy, nine, threeHundred, eighty, threeHundred, eighty, one, threeHundred, eighty, two, threeHundred, eighty, three, threeHundred, eighty, four, threeHundred, eighty, five, threeHundred, eighty, six, threeHundred, eighty, seven, threeHundred, eighty, eight, threeHundred, eighty, nine, threeHundred, ninety, threeHundred, ninety, one, threeHundred, ninety, two, threeHundred, ninety, three, threeHundred, ninety, four, threeHundred, ninety, five, threeHundred, ninety, six, threeHundred, ninety, seven, threeHundred, ninety, eight, threeHundred, ninety, nine, fourHundred, fourHundred, one, fourHundred, two, fourHundred, three, fourHundred, four, fourHundred, five, fourHundred, six, fourHundred, seven, fourHundred, eight, fourHundred, nine, fourHundred, ten, fourHundred, eleven, fourHundred, twelve, fourHundred, thirteen, fourHundred, fourteen, fourHundred, fifteen, fourHundred, sixteen, fourHundred, seventeen, fourHundred, eighteen, fourHundred, nineteen, fourHundred, twenty, fourHundred, twenty, one, fourHundred, twenty, two, fourHundred, twenty, three, fourHundred, twenty, four, fourHundred, twenty, five, fourHundred, twenty, six, fourHundred, twenty, seven, fourHundred, twenty, eight, fourHundred, twenty, nine, fourHundred, thirty, fourHundred, thirty, one, fourHundred, thirty, two, fourHundred, thirty, three, fourHundred, thirty, four, fourHundred, thirty, five, fourHundred, thirty, six, fourHundred, thirty, seven, fourHundred, thirty, eight, fourHundred, thirty, nine, fourHundred, forty, fourHundred, forty, one, fourHundred, forty, two, fourHundred, forty, three, fourHundred, forty, four, fourHundred, forty, five, fourHundred, forty, six, fourHundred, forty, seven, fourHundred, forty, eight, fourHundred, forty, nine, fourHundred, fifty, fourHundred, fifty, one, fourHundred, fifty, two, fourHundred, fifty, three, fourHundred, fifty, four, fourHundred, fifty, five, fourHundred, fifty, six, fourHundred, fifty, seven, fourHundred, fifty, eight, fourHundred, fifty, nine, fourHundred, sixty, fourHundred, sixty, one, fourHundred, sixty, two, fourHundred, sixty, three, fourHundred, sixty, four, fourHundred, sixty, five, fourHundred, sixty, six, fourHundred, sixty, seven, fourHundred, sixty, eight, fourHundred, sixty, nine, fourHundred, seventy, fourHundred, seventy, one, fourHundred, seventy, two, fourHundred, seventy, three, fourHundred, seventy, four, fourHundred, seventy, five, fourHundred, seventy, six, fourHundred, seventy, seven, fourHundred, seventy, eight, fourHundred, seventy, nine, fourHundred, eighty, fourHundred, eighty, one, fourHundred, eighty, two, fourHundred, eighty, three, fourHundred, eighty, four, fourHundred, eighty, five, fourHundred, eighty, six, fourHundred, eighty, seven, fourHundred, eighty, eight, fourHundred, eighty, nine, fourHundred, ninety, fourHundred, ninety, one, fourHundred, ninety, two, fourHundred, ninety, three, fourHundred, ninety, four, fourHundred, ninety, five, fourHundred, ninety, six, fourHundred, ninety, seven, fourHundred, ninety, eight, fourHundred, ninety, nine, fiveHundred, fiveHundred, one, fiveHundred, two, fiveHundred, three, fiveHundred, four, fiveHundred, five, fiveHundred, six, fiveHundred, seven, fiveHundred, eight, fiveHundred, nine, fiveHundred, ten, fiveHundred, eleven, fiveHundred, twelve, fiveHundred, thirteen, fiveHundred, fourteen, fiveHundred, fifteen, fiveHundred, sixteen, fiveHundred, seventeen, fiveHundred, eighteen, fiveHundred, nineteen, fiveHundred, twenty, fiveHundred, twenty, one, fiveHundred, twenty, two, fiveHundred, twenty, three, fiveHundred, twenty, four, fiveHundred, twenty, five, fiveHundred, twenty, six, fiveHundred, twenty, seven, fiveHundred, twenty, eight, fiveHundred, twenty, nine, fiveHundred, thirty, fiveHundred, thirty, one, fiveHundred, thirty, two, fiveHundred, thirty, three, fiveHundred, thirty, four, fiveHundred, thirty, five, fiveHundred, thirty, six, fiveHundred, thirty, seven, fiveHundred, thirty, eight, fiveHundred, thirty, nine, fiveHundred, forty, fiveHundred, forty, one, fiveHundred, forty, two, fiveHundred, forty, three, fiveHundred, forty, four, fiveHundred, forty, five, fiveHundred, forty, six, fiveHundred, forty, seven, fiveHundred, forty, eight, fiveHundred, forty, nine, fiveHundred, fifty, fiveHundred, fifty, one, fiveHundred, fifty, two, fiveHundred, fifty, three, fiveHundred, fifty, four, fiveHundred, fifty, five, fiveHundred, fifty, six, fiveHundred, fifty, seven, fiveHundred, fifty, eight, fiveHundred, fifty, nine, fiveHundred, sixty, fiveHundred, sixty, one, fiveHundred, sixty, two, fiveHundred, sixty, three, fiveHundred, sixty, four, fiveHundred, sixty, five, fiveHundred, sixty, six, fiveHundred, sixty, seven, fiveHundred, sixty, eight, fiveHundred, sixty, nine, fiveHundred, seventy, fiveHundred, seventy, one, fiveHundred, seventy, two, fiveHundred, seventy, three, fiveHundred, seventy, four, fiveHundred, seventy, five, fiveHundred, seventy, six, fiveHundred, seventy, seven, fiveHundred, seventy, eight, fiveHundred, seventy, nine, fiveHundred, eighty, fiveHundred, eighty, one, fiveHundred, eighty, two, fiveHundred, eighty, three, fiveHundred, eighty, four, fiveHundred, eighty, five, fiveHundred, eighty, six, fiveHundred, eighty, seven, fiveHundred, eighty, eight, fiveHundred, eighty, nine, fiveHundred, ninety, fiveHundred, ninety, one, fiveHundred, ninety, two, fiveHundred, ninety, three, fiveHundred, ninety, four, fiveHundred, ninety, five, fiveHundred, ninety, six, fiveHundred, ninety, seven, fiveHundred, ninety, eight, fiveHundred, ninety, nine, sixHundred, sixHundred, one, sixHundred, two, sixHundred, three, sixHundred, four, sixHundred, five, sixHundred, six, sixHundred, seven, sixHundred, eight, sixHundred, nine, sixHundred, ten, sixHundred, eleven, sixHundred, twelve, sixHundred, thirteen, sixHundred, fourteen, sixHundred, fifteen, sixHundred, sixteen, sixHundred, seventeen, sixHundred, eighteen, sixHundred, nineteen, sixHundred, twenty, sixHundred, twenty, one, sixHundred, twenty, two, sixHundred, twenty, three, sixHundred, twenty, four, sixHundred, twenty, five, sixHundred, twenty, six, sixHundred, twenty, seven, sixHundred, twenty, eight, sixHundred, twenty, nine, sixHundred, thirty, sixHundred, thirty, one, sixHundred, thirty, two, sixHundred, thirty, three, sixHundred, thirty, four, sixHundred, thirty, five, sixHundred, thirty, six, sixHundred, thirty, seven, sixHundred, thirty, eight, sixHundred, thirty, nine, sixHundred, forty, sixHundred, forty, one, sixHundred, forty, two, sixHundred, forty, three, sixHundred, forty, four, sixHundred, forty, five, sixHundred, forty, six, sixHundred, forty, seven, sixHundred, forty, eight, sixHundred, forty, nine, sixHundred, fifty, sixHundred, fifty, one, sixHundred, fifty, two, sixHundred, fifty, three, sixHundred, fifty, four, sixHundred, fifty, five, sixHundred, fifty, six, sixHundred, fifty, seven, sixHundred, fifty, eight, sixHundred, fifty, nine, sixHundred, sixty, sixHundred, sixty, one, sixHundred, sixty, two, sixHundred, sixty, three, sixHundred, sixty, four, sixHundred, sixty, five, sixHundred, sixty, six, sixHundred, sixty, seven, sixHundred, sixty, eight, sixHundred, sixty, nine, sixHundred, seventy, sixHundred, seventy, one, sixHundred, seventy, two, sixHundred, seventy, three, sixHundred, seventy, four, sixHundred, seventy, five, sixHundred, seventy, six, sixHundred, seventy, seven, sixHundred, seventy, eight, sixHundred, seventy, nine, sixHundred, eighty, sixHundred, eighty, one, sixHundred, eighty, two, sixHundred, eighty, three, sixHundred, eighty, four, sixHundred, eighty, five, sixHundred, eighty, six, sixHundred, eighty, seven, sixHundred, eighty, eight, sixHundred, eighty, nine, sixHundred, ninety, sixHundred, ninety, one, sixHundred, ninety, two, sixHundred, ninety, three, sixHundred, ninety, four, sixHundred, ninety, five, sixHundred, ninety, six, sixHundred, ninety, seven, sixHundred, ninety, eight, sixHundred, ninety, nine, sevenHundred, sevenHundred, one, sevenHundred, two, sevenHundred, three, sevenHundred, four, sevenHundred, five, sevenHundred, six, sevenHundred, seven, sevenHundred, eight, sevenHundred, nine, sevenHundred, ten, sevenHundred, eleven, sevenHundred, twelve, sevenHundred, thirteen, sevenHundred, fourteen, sevenHundred, fifteen, sevenHundred, sixteen, sevenHundred, seventeen, sevenHundred, eighteen, sevenHundred, nineteen, sevenHundred, twenty, sevenHundred, twenty, one, sevenHundred, twenty, two, sevenHundred, twenty, three, sevenHundred, twenty, four, sevenHundred, twenty, five, sevenHundred, twenty, six, sevenHundred, twenty, seven, sevenHundred, twenty, eight, sevenHundred, twenty, nine, sevenHundred, thirty, sevenHundred, thirty, one, sevenHundred, thirty, two, sevenHundred, thirty, three, sevenHundred, thirty, four, sevenHundred, thirty, five, sevenHundred, thirty, six, sevenHundred, thirty, seven, sevenHundred, thirty, eight, sevenHundred, thirty, nine, sevenHundred, forty, sevenHundred, forty, one, sevenHundred, forty, two, sevenHundred, forty, three, sevenHundred, forty, four, sevenHundred, forty, five, sevenHundred, forty, six, sevenHundred, forty, seven, sevenHundred, forty, eight, sevenHundred, forty, nine, sevenHundred, fifty, sevenHundred, fifty, one, sevenHundred, fifty, two, sevenHundred, fifty, three, sevenHundred, fifty, four, sevenHundred, fifty, five, sevenHundred, fifty, six, sevenHundred, fifty, seven, sevenHundred, fifty, eight, sevenHundred, fifty, nine, sevenHundred, sixty, sevenHundred, sixty, one, sevenHundred, sixty, two, sevenHundred, sixty, three, sevenHundred, sixty, four, sevenHundred, sixty, five, sevenHundred, sixty, six, sevenHundred, sixty, seven, sevenHundred, sixty, eight, sevenHundred, sixty, nine, sevenHundred, seventy, sevenHundred, seventy, one, sevenHundred, seventy, two, sevenHundred, seventy, three, sevenHundred, seventy, four, sevenHundred, seventy, five, sevenHundred, seventy, six, sevenHundred, 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将它们全部添加为18451
另一个答案给出了解释，但你必须考虑
1-9 10-19 数以百计 数千
代表912
首先，9 12 - ＆gt; Exctract nineHundred，因为912的长度为3
其次，9 1 2 - ＆gt;如果它是1，则表示我们使用10-19来确定我们使用下一个数字91 2，它可以用作数组中的索引以获得12个。