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java算法----0至9这十个数组成两个三位数和一个四位数
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http://yangjianzhouctgu.iteye.com/blog/1884313
Java代碼 ?
package?com.zhonghaiwangluokeji.interview; ????????????public?class?Problem3?{ ????????public?static?void?main(String[]?args)?{ ??????????printNumbers(); ??????} ??????public?static?void?printNumbers(){ ????????????int?result?=?0; ??????????for(int?i=123;i<=987;i++){ ??????????????for(int?j=123;j<=987;j++){ ??????????????????result?=?i+j; ??????????????????if((result>1000)&&isTrue(result,i,j)){ ??????????????????????System.out.print(result+"?"); ??????????????????????System.out.print(i+"?"); ??????????????????????System.out.println(j+"?"); ??????????????????} ??????????????} ??????????} ??????} ????????public?static?boolean?isTrue(int?result,int?i,int?j){ ??????????String?str?=?"0123456789"; ??????????String?s?=?result+""+i+""+j; ??????????int?index?=?0; ??????????String?str1?=?""; ??????????for(int?k?=0;k<str.length();k++){ ??????????????index?=?s.indexOf(str.charAt(k)); ??????????????if(index>=0){ ??????????????????str1?=?s.replaceFirst(str.charAt(k)+"",?"a"); ??????????????????s?=?str1; ??????????????} ??????????} ??????????String?s1?=?s.replaceAll("a",?""); ??????????if(s1.length()==0){ ??????????????return?true; ??????????} ??????????return?false; ??????} ??}??
package com.zhonghaiwangluokeji.interview;/*** 0-9這十個數(shù)，組合成兩個三位數(shù)和一個四位數(shù)* 求出滿足條件：兩個三位數(shù)相加等于那個四位數(shù)* 的所有這些數(shù)* @author yangjianzhou**/
public class Problem3 {public static void main(String[] args) {printNumbers();}public static void printNumbers(){int result = 0;for(int i=123;i<=987;i++){for(int j=123;j<=987;j++){result = i+j;if((result>1000)&&isTrue(result,i,j)){System.out.print(result+" ");System.out.print(i+" ");System.out.println(j+" ");}}}}public static boolean isTrue(int result,int i,int j){String str = "0123456789";String s = result+""+i+""+j;int index = 0;String str1 = "";for(int k =0;k<str.length();k++){index = s.indexOf(str.charAt(k));if(index>=0){str1 = s.replaceFirst(str.charAt(k)+"", "a");s = str1;}}String s1 = s.replaceAll("a", "");if(s1.length()==0){return true;}return false;}
}
運行結(jié)果：
Java代碼 ?
1035?246?789? ??1035?249?786? ??1053?264?789? ??1053?269?784? ??1053?284?769? ??1035?286?749? ??1035?289?746? ??1053?289?764? ??1089?324?765? ??1089?325?764? ??1098?342?756? ??1098?346?752? ??1206?347?859? ??1206?349?857? ??1098?352?746? ??1098?356?742? ??1206?357?849? ??1206?359?847? ??1089?364?725? ??1089?365?724? ??1098?423?675? ??1098?425?673? ??1305?426?879? ??1305?429?876? ??1089?432?657? ??1026?437?589? ??1089?437?652? ??1026?439?587? ??1089?452?637? ??1089?457?632? ??1062?473?589? ??1098?473?625? ??1098?475?623? ??1305?476?829? ??1062?479?583? ??1305?479?826? ??1062?483?579? ??1026?487?539? ??1026?489?537? ??1062?489?573? ??1026?537?489? ??1026?539?487? ??1062?573?489? ??1062?579?483? ??1062?583?479? ??1026?587?439? ??1026?589?437? ??1062?589?473? ??1098?623?475? ??1503?624?879? ??1098?625?473? ??1503?629?874? ??1089?632?457? ??1089?637?452? ??1089?652?437? ??1089?657?432? ??1098?673?425? ??1503?674?829? ??1098?675?423? ??1503?679?824? ??1089?724?365? ??1089?725?364? ??1098?742?356? ??1602?743?859? ??1035?746?289? ??1098?746?352? ??1035?749?286? ??1602?749?853? ??1098?752?346? ??1602?753?849? ??1098?756?342? ??1602?759?843? ??1053?764?289? ??1089?764?325? ??1089?765?324? ??1053?769?284? ??1053?784?269? ??1035?786?249? ??1035?789?246? ??1053?789?264? ??1503?824?679? ??1305?826?479? ??1305?829?476? ??1503?829?674? ??1602?843?759? ??1206?847?359? ??1206?849?357? ??1602?849?753? ??1602?853?749? ??1206?857?349? ??1206?859?347? ??1602?859?743? ??1503?874?629? ??1305?876?429? ??1305?879?426? ??1503?879?624???
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