import java.awt.*;
import java.util.*;
import java.lang.*;
import java.text.*;

public class strUtil{
    static final String newLine = "\n";
    static final char   charSpace = ' ';
    static final String strSpace = " ";


    //Return a copy of a string.
    public static String strcpy(String string)
    {   
        int Len; String newStr; char CharStr[];

        CharStr = string.toCharArray();
        Len = string.length();
        newStr = String.copyValueOf(CharStr, 0, Len);
        return(newStr);
    }
    //Return a string copy of at most the first n characters of a string.
    public static String strncpy(String string, int n)
    {   
        int Len; String newStr; char CharStr[];
        
        Len = string.length();
        if(Len < n)n = Len;
        CharStr = string.toCharArray();
        newStr = String.copyValueOf(CharStr, 0, n);
        return(newStr);
    }
    //Return a string copy of at most m characters of a string, beginning
    //at index n.
    public static String strncpy(String string, int n, int m)
    {   
        int Len; String newStr; char CharStr[];

        Len = string.length();
        if( (m + n) > Len)m = Len - n;
        CharStr = string.toCharArray();
        newStr = String.copyValueOf(CharStr, n, m);
        return(newStr);
    }
    //Append an integer index to a string. The resulting representation
    //is made to occupy a field length of Ifield by left-padding with
    //spaces.
    public static String indexString(String string, int value, int IField)
    {
        int i, Len, delta;
        String newStr, str1, str2; char CharStr[];

        Integer Ivalue = new Integer(value);
        String strValue = Ivalue.toString();
        str1 = string.concat(strValue);
        Len = str1.length();
        if(Len >= IField){
            newStr = str1;
            return(newStr);
        }
        delta = IField - Len;
        CharStr = new char[delta];
        for(i=0; i<delta; i++)CharStr[i] = charSpace;
        str2 = String.copyValueOf(CharStr);
        newStr = str2.concat(str1);
        return(newStr);
    }
    //Left-pad a string with spaces so that the resulting string
    //has length Ifield.
    public static String padString(String string, int IField)
    {
        int i, Len, delta;
        String newStr, str; char CharStr[];

        Len = string.length();
        if(Len >= IField){
            newStr = string;
            return(newStr);
        }
        delta = IField - Len;
        CharStr = new char[delta];
        for(i=0; i<delta; i++)CharStr[i] = charSpace;
        str = String.copyValueOf(CharStr);
        newStr = str.concat(string);
        return(newStr);
    }
    //Left-pad a string with character c so that the resulting string
    //has length Ifield.
    public static String padString(String string, char c, int IField)
    {
        int i, Len, delta;
        String newStr, str; char CharStr[];

        Len = string.length();
        if(Len >= IField){
            newStr = string;
            return(newStr);
        }
        delta = IField - Len;
        CharStr = new char[delta];
        for(i=0; i<delta; i++)CharStr[i] = c;
        str = String.copyValueOf(CharStr);
        newStr = str.concat(string);
        return(newStr);
    }
    public static void printSpace(int Len)
    {
        for(int i=0; i<Len; i++)System.out.print(strSpace);
        return;
    }
    public static void printLine()
    {
        System.out.print(newLine);
    }
    public static void print(String string)
    {
        System.out.print(string);
    }
    public static void print(int Len, double number){
        int Ipad;
        Double Dnumber = new Double(number);
        String str = Dnumber.toString();
        Ipad = Len - str.length();
        for(int i=0; i<Ipad; i++)System.out.print(strSpace);
        System.out.print(str);
        return;
    }
    public static void print(int Len, int number){
        int Ipad;
        Integer Inumber = new Integer(number);
        String str = Inumber.toString();
        Ipad = Len - str.length();
        for(int i=0; i<Ipad; i++)System.out.print(strSpace);
        System.out.print(str);
        return;
    }
}