Method Experiment Report

Prime

ImportJava.util.*; Public classPrimenumbermanager {Private intoutput_count=0;//number of outputs per row    Private intMin = 3; Private intmax = 100;  Public voidCalculation () {//Number of primes in calculated rangeThe prime numbers between System.out.println (min+ "to" +max+ ") are:");  for(intI=min; i<=max; i++){            intsign=0;//Mark             for(intj=2; (J<math.sqrt (i)) && (sign==0); J + +){                if((I%J) ==0) { sign++; }            }            if(sign==0) {display (i); }} Output_count= 0;    System.out.println (); }         Public voidDisplayintNumber )        {System.out.print (number); Output_count++; if(Output_count = = 5) {//Line with five numbers, newlineSystem.out.println (); Output_count=0; }        Else{System.out.print (" "); }} @SuppressWarnings ("Resource")     Public voidSetminmax () {System.out.println ("Please enter two integers"); Scanner in=NewScanner (system.in); intMin =In.nextint (); intMax =In.nextint (); if(Max <min) {Max+=min; Min= max-min; Max= max-min; }         This. Min =min;  This. Max =Max;    Calculation (); }    }

Primenumbermanager.java

/**/Publicclass     primenumber {publicstatic  void  main (String [] args) {        new  Primenumbermanager ();        P.calculation ();        P.setminmax ();    }}

Primenumber

Palindrome

 Public classDetection {Private intSign=0; Private intlength; PrivateString str =NewString ();  Public voidsetstr (String str) {intN=0;  This. str =str; Length=str.length ();    Judge (n); }         Public voidJudgeintN) {        if((length-n) <=1) {//the string is either 0 or a single character Fu HuiwenSign=1; }        Else{            intFront =Str.charat (n); intback = Str.charat (length-n-1); if(Front = =Back ) {Judge (++N); }            Else{ Sign=0; }        }    }         Public voiddisplay () {if(sign = = 0) System.out.println ("The string does not palindrome"); ElseSystem.out.println ("The String Palindrome"); }    }

Detection.java

ImportJava.util.Scanner; Public classpalindrome { Public Static voidmain (String [] args) {Detection d=NewDetection (); @SuppressWarnings ("Resource") Scanner in=NewScanner (system.in); String Str=NewString (); System.out.println ("Please enter a string"); STR=In.next ();        D.setstr (str);    D.display (); }}

palindrome

Word frequency

ImportJava.io.*; Public classStatistics {PrivateString word= ""; Privatestring[] str =Newstring[500]; Private int[] Count =New int[500]; Private inti=0;//Count The number of existing words//Read File contents     Public voidreadFile (String filename) {file file=NewFile (filename); Reader Reader=NULL; Try{Reader=NewInputStreamReader (Newfileinputstream (file)); intTempchar;  while((Tempchar = Reader.read ())! =-1) {Extractword (Tempchar); //Pass each character} reader.close (); }        Catch(Exception e) {e.printstacktrace (); }    }        //Extracting Words     Public voidExtractword (intTempchar) {        if((tempchar>65&&tempchar<90) | | (tempchar>97&&tempchar<122)) ){//when Tempchar is a letter, appendWord + = (Char) Tempchar; }        Else if((!"". Equals (word))                                                {Statisticalword (); //StatisticsWord= ""; }    }        //Statistical Words     Public intStatisticalword () {intJ=0;  for(; j<i; J + + ){            if(Str[j].equals (Word)) {Count[j]++;//count The Times plus one                return0; }} Str[j]=word;//Add a Wordcount[j]++; I++; return0; }        //to display statistical information     Public voiddisplay () { for(intj=0; j<i; J + +) {System.out.println (Str[j]+ "\ T" +Count[j]); }    }    }

Statistics.java

 Public class Words {    publicstaticvoid  main (String [] args) {        = "c:/ File.txt ";         New Statistics ();        Sta.readfile (filename);        Sta.display ();    }}

Words.java

Method Experiment Report