Java > String-2 > mixString (CodingBat Solution)

Problem:

Given two strings, A and B, create a bigger string made of the first char of A, the first char of B, the second char of A, the second char of B, and so on. Any leftover chars go at the end of the result.

mixString("abc", "xyz") → "axbycz"
mixString("Hi", "There") → "HTihere"
mixString("xxxx", "There") → "xTxhxexre"


Solution:

public String mixString(String a, String b) {
  int aLen = a.length();
  int bLen = b.length();
  int max = Math.max(aLen, bLen);
  String word = "";
  
  for (int i = 0; i < max; i++) {
    if (i <= aLen-1)
      word += a.substring(i,i+1);
    if (i <= bLen-1)
      word += b.substring(i,i+1);

  }
  return word;
}


Labels: , ,

38 comments :

  1. UnknownJanuary 21, 2016 at 7:03 PM

    I invented the wheel...
    public String mixString(String a, String b) {
    char[] result = new char[a.length() + b.length()];
    int i = 0;
    int aK = 0;
    int bK = 0;
    while (i < result.length){
    if (aK < a.length()) {
    result[i] = a.charAt(aK);
    aK++;
    i++;
    }
    if (bK < b.length()) {
    result[i] = b.charAt(bK);
    bK++;
    i++;
    }
    }
    String res = new String(result);
    return res;
    }

    ReplyDelete
  2. AnonymousDecember 2, 2016 at 3:19 PM

    public String mixString(String a, String b) {
    int stringALen = a.length();
    int stringBLen = b.length();

    int shortStr = 0;

    String newStr = "";

    if(stringALen >= stringBLen) shortStr = stringBLen;

    if(stringBLen >= stringALen) shortStr = stringALen;



    if(stringALen >= stringBLen){
    for(int i = 0; i < shortStr; i++ ){
    newStr += a.charAt(i);
    newStr += b.charAt(i);
    }

    newStr = newStr + a.substring(shortStr);
    }

    if(stringBLen > stringALen){
    for(int i = 0; i < shortStr; i++ ){
    newStr += a.charAt(i);
    newStr += b.charAt(i);
    }

    newStr = newStr + b.substring(shortStr);
    }
    return newStr;
    }

    ReplyDelete
  3. AnonymousJune 8, 2017 at 5:12 AM

    public String mixString(String a, String b) {
    String result = "";
    int i = 0;
    while (i<a.length()&&i<b.length()){
    result = result + a.charAt(i) + b.charAt(i);
    i++;
    }
    return result+a.substring(i)+b.substring(i);
    }

    ReplyDelete
    Replies
    1. UnknownMay 7, 2020 at 5:39 PM

      not working

      Delete
    2. YesDNovember 5, 2021 at 6:48 AM

      it works perfectly.
      to use this code in other editor

      class mix
      {
      public String mixString(String a, String b) {
      String result = "";
      int i = 0;
      while (i<a.length()&&i<b.length()){
      result = result + a.charAt(i) + b.charAt(i);
      i++;
      }
      return result+a.substring(i)+b.substring(i);
      }
      public static void main(String[] args)
      {
      String a1;
      mix b1= new mix();
      a1=b1.mixString("he","lo");
      System.out.println(a1);
      }
      }

      Delete
  4. AnonymousSeptember 17, 2017 at 11:57 AM

    public String mixString(String a, String b) {
    int min = Math.min(a.length(), b.length());

    String result = "";
    String tail = "";

    for(int i = 0; i < min; i++){
    result = result + a.charAt(i) + b.charAt(i);
    }

    if(a.length() < b.length()){
    tail = b.substring(min, b.length());
    result = result + tail;
    }

    if(a.length() > b.length()){
    tail = a.substring(min, a.length());
    result = result + tail;
    }

    return result;

    }

    ReplyDelete
    Replies
    1. AnarAghaSeptember 14, 2020 at 9:06 PM

      Wow. We used almost exact same logic

      String blank = "";
      int lenA = a.length();
      int lenB = b.length();
      int minLen = Math.min(lenA,lenB);

      for(int i=0; i=lenB){
      blank = blank + a.substring(lenB);
      }
      return blank;

      Delete
    2. AnarAghaSeptember 14, 2020 at 9:07 PM

      Wrong paste

      public String mixString(String a, String b) {
      String blank = "";
      int lenA = a.length();
      int lenB = b.length();
      int minLen = Math.min(lenA,lenB);

      for(int i=0; i=lenB){
      blank = blank + a.substring(lenB);
      }
      return blank;

      }

      Delete
  5. AnonymousDecember 14, 2017 at 10:57 PM

    String str=""; int i=0;
    if(a.length()<=0)
    {
    return b;
    }
    else if(b.length()<=0)
    {
    return a;
    }
    else if(a.length()<b.length())
    {
    for(i=0;i<a.length();i++)
    {
    str = str+ a.substring(i,i+1)+b.substring(i,i+1);
    }
    return str+b.substring(i);
    }
    else
    {
    for(i=0;i<b.length();i++)
    {
    str = str+ a.substring(i,i+1)+b.substring(i,i+1);
    }
    return str+a.substring(i);
    }

    ReplyDelete
  6. AnonymousJanuary 17, 2018 at 3:10 PM

    public String mixString(String a, String b) {
    String result = "";

    if (a.length()<=b.length())
    {
    for (int i=0; i<a.length(); i++)
    {
    result = result + a.charAt(i) + b.charAt(i);
    }
    result = result + b.substring(a.length(),b.length());
    }

    if (b.length()<a.length())
    {
    for (int i=0; i<b.length(); i++)
    {
    result = result + a.charAt(i) + b.charAt(i);

    }
    result = result + a.substring(b.length(),a.length());
    }

    return result;

    }

    ReplyDelete
  7. UnknownApril 6, 2018 at 5:50 PM

    public String mixString(String a, String b) {
    String newString = "";
    int minLen = Math.min(a.length(),b.length());

    for(int i=0; i<minLen; i++){
    newString = newString + a.charAt(i) + b.charAt(i);
    }
    if(minLen == a.length())
    newString = newString + b.substring(minLen);
    if(minLen == b.length())
    newString = newString + a.substring(minLen);
    return newString;
    }

    ReplyDelete
  8. UnknownOctober 8, 2018 at 2:37 AM

    I really need to remember that the Math class exists ._.

    public String mixString(String a, String b) {
    String result = "";
    int lengthA = a.length();
    int lengthB = b.length();
    if(lengthA > lengthB){
    for(int x = 0 ; x < lengthB ; x++){
    result = result + a.substring(x,x+1);
    result = result + b.substring(x,x+1);
    }
    result = result + a.substring(lengthB);
    }
    else if(lengthA < lengthB){
    for(int x = 0 ; x < lengthA ; x++){
    result = result + a.substring(x,x+1);
    result = result + b.substring(x,x+1);
    }
    result = result + b.substring(lengthA);
    }
    else{
    for(int x = 0 ; x < lengthA ; x++){
    result = result + a.substring(x,x+1);
    result = result + b.substring(x,x+1);
    }
    }
    return result;
    }

    ReplyDelete
  9. UnknownOctober 10, 2018 at 2:15 PM

    public String mixString(String a, String b) {
    int alen = a.length();
    int blen = b.length();
    String newStr = "";

    if (alen == blen)
    {
    for (int i = 0 ; i < alen ; i++)
    {
    newStr = newStr + a.charAt(i) + b.charAt(i);
    }
    }

    if (alen < blen)
    {
    for (int i = 0; i < alen; i++)
    {
    newStr = newStr+ a.charAt(i) + b.charAt(i) ;
    }
    newStr= newStr + b.substring(alen,blen);
    }

    if (alen > blen)
    {
    for (int i = 0; i < blen; i++)
    {
    newStr = newStr + a.charAt(i) + b.charAt(i) ;
    }
    newStr= newStr + a.substring(blen,alen);
    }

    return newStr;
    }

    ReplyDelete
  10. UnknownOctober 21, 2018 at 9:10 AM

    public String mixString(String a, String b) {
    String s="";
    if(a.length()<=b.length())
    {
    for(int i=0;ib.length())
    {
    for(int i=0;i<b.length();i++)
    {
    s=s+a.charAt(i)+b.charAt(i);
    }
    s=s+a.substring(b.length(),a.length());
    }
    return s;

    }

    ReplyDelete
  11. UnknownOctober 22, 2018 at 6:49 AM

    public String mixString(String a, String b) {
    int l = 0;
    String res = "";
    String h = "";
    if (a.length() <= b.length()) {
    l = a.length();
    h = b.substring(l);
    } else {
    l = b.length();
    h = a.substring(l);
    }

    for (int i = 0; i < l; i++) {

    res += a.substring(i, i+1) + b.substring(i, i+1);

    }

    return res + h;
    }

    ReplyDelete
  12. kmsrshdFebruary 10, 2019 at 11:43 AM

    get a star from coding bat:

    public String mixString(String a, String b) {
    int max, min;
    if(a.length() > b.length())
    {
    max = a.length();
    min = b.length();
    }
    else
    {
    max = b.length();
    min = a.length();
    }

    String ab = "";
    for(int c = 0; c < min; c++)
    {
    ab = ab + a.charAt(c) + b.charAt(c);
    }

    if(max == a.length())
    {
    for(int d = min; d < max; d++)
    {
    ab = ab + a.charAt(d);
    }
    }
    else
    {
    for(int d = min; d < max; d++)
    {
    ab = ab + b.charAt(d);
    }
    }

    return ab;
    }

    ReplyDelete
  13. KyleFebruary 20, 2019 at 5:49 PM

    public String mixString(String a, String b) {
    if(a.length()== 0)
    return b;
    else if(b.length() == 0)
    return a;
    else
    return "" + a.charAt(0) + b.charAt(0) + mixString(a.substring(1), b.substring(1));
    }

    ReplyDelete
  14. UnknownFebruary 22, 2019 at 5:16 AM

    public String mixString(String a, String b) {

    String temp="";
    int minimum =Math.min(a.length(),b.length());

    for (int i=0;ib.length())
    temp+=a.substring(minimum);

    return temp;
    }

    ReplyDelete
  15. UnknownFebruary 22, 2019 at 5:18 AM

    public String mixString(String a, String b) {

    String temp="";
    int minimum =Math.min(a.length(),b.length());

    for (int i=0;ib.length())
    temp+=a.substring(minimum);

    return temp;
    }

    ReplyDelete
  16. Kamoliddin UsmonovMay 10, 2019 at 11:59 PM

    public String mixString(String a, String b) {
    int small = (a.length() > b.length() ? b.length() : a.length());
    String big = (a.length() > b.length() ? a : b);
    String result = "";
    for (int i = 0; i < small; i++) {
    result = result + a.charAt(i) + b.charAt(i);
    }
    return result + big.substring(small);
    }

    ReplyDelete
  17. AbudéSeptember 1, 2019 at 11:36 PM

    public String mixString(String a, String b) {
    String result = "";
    int len = 0;
    if ( a.length() <= b.length()) {
    len = a.length();
    } else if ( a.length() > b.length()){
    len = b.length();
    }
    for ( int i = 0; i < len ; i++ ){
    result = result + a.charAt(i) + b.charAt(i);
    }
    if ( a.length() < b.length()) {
    result += b.substring(a.length());
    } else {
    result += a.substring(b.length());
    }

    return result;
    }

    ReplyDelete
  18. UnknownApril 8, 2020 at 11:46 AM

    public String mixString(String a, String b) {
    int len = Math.min(a.length(), b.length());
    String word = "";
    for(int i=0; ib.length())
    {
    word = word + a.substring(len, a.length());
    }
    if(b.length()>a.length())
    {
    word = word + b.substring(len, b.length());
    }

    return word;


    }

    ReplyDelete
  19. UnknownMay 10, 2020 at 1:35 AM

    public String mixString(String a, String b) {
    String word = "";
    int max = Math.max(a.length(),b.length());
    for(int i=0; i<max; i++){
    if(i<a.length())
    word+=a.charAt(i);
    if(i<b.length())
    word+=b.charAt(i);
    }
    return word;
    }

    ReplyDelete
  20. UnknownAugust 16, 2020 at 12:20 PM

    public String mixString(String a, String b) {
    String rep = "";
    for (int i = 0; i < Math.max(a.length(), b.length()); i++)
    {
    if (i < a.length())
    {
    rep += a.substring(i, i + 1);
    }
    if (i < b.length())
    {
    rep += b.substring(i, i + 1);
    }
    }
    return rep;
    }

    ReplyDelete
  21. AnonymousSeptember 13, 2020 at 4:42 PM

    public String mixString(String a, String b) {
    if (a.length() == 0){
    return b;
    }
    if (b.length() == 0){
    return a;
    }
    return "" + a.charAt(0) + b.charAt(0) + mixString(a.substring(1), b.substring(1));
    }

    ReplyDelete
  22. AnonymousSeptember 13, 2020 at 4:45 PM

    public String mixString(String a, String b) {
    return (a.length() == 0)? b:
    (b.length() == 0)? a:
    "" + a.charAt(0) + b.charAt(0) + mixString(a.substring(1), b.substring(1));
    }

    ReplyDelete
  23. UnknownSeptember 24, 2020 at 10:12 AM

    public String mixString(String a, String b) {
    String mix = "";
    if(a.length()> b.length()){
    for(int i=0;i a.length()){
    for(int j=0;j <a.length(); j++){
    mix = mix + a.charAt(j) + b.charAt(j);
    }
    mix = mix + b.substring(a.length());
    } if(a.length() == b.length()){
    for(int i=0;i <b.length(); i++){
    mix = mix + a.charAt(i) + b.charAt(i);
    }

    }
    return mix;
    }

    ReplyDelete
  24. bkNovember 5, 2020 at 5:18 AM

    AAaauuuuugGgHhhhhh

    public String mixString(String a, String b) {
    if(a=="") return b;
    if(b=="") return a;

    int len = a.length()<b.length() ? a.length() : b.length();
    String res="";

    for(int i=0;i<len;i++){
    res+=a.substring(i,i+1)+b.substring(i,i+1);
    }

    if(a.length()<b.length()){
    if(a.length()*2==b.length()){
    res+=b.substring(b.length()-a.length());
    } else {
    res+=b.substring((b.length()%a.length())*a.length());
    }
    }
    if(b.length()<a.length()){
    if(b.length()*2==a.length()){
    res+=a.substring(a.length()-b.length());
    } else {
    res+=a.substring((b.length()%a.length())*b.length());
    }
    }
    return res;
    }

    ReplyDelete
  25. GabeFebruary 18, 2021 at 3:41 PM

    public String mixString(String a, String b) {

    String res = "";
    int alen = a.length();
    int blen = b.length();
    int min = Math.min(alen, blen);

    int i;
    for(i = 0; i < min; ++i) {

    res += a.substring(i, i+1) + b.substring(i, i+1);
    }

    return (i < alen) ? (res += a.substring(i, alen)) : (res += b.substring(i, blen));
    }

    ReplyDelete
  26. Mohamed KarmMarch 5, 2021 at 11:36 AM

    public String mixString(String a, String b) {

    String result="";

    int minTall=Math.min(a.length(), b.length() );
    for(int i=0;ib.length())return a;
    else return b;}

    ReplyDelete
  27. vishal singhSeptember 4, 2021 at 11:02 AM

    public String mixString(String a, String b)
    {
    int xlen = a.length() ;
    int ylen = b.length() ;
    int max = Math.max(xlen, ylen) ;
    String Roomy = "" ;
    for(int i = 0 ; i < max ; i++)
    {
    if(i <= xlen-1)
    Roomy += a.substring(i,i+1);
    if(i <= ylen-1)
    Roomy += b.substring(i,i+1) ;

    }
    return Roomy ;

    }

    ReplyDelete
  28. SinuserOctober 26, 2021 at 6:52 AM

    public String mixString(String a, String b)
    {
    String s = "";

    for(int i =0; i < (a.length() + b.length()); i++)
    {
    if(a.length() > i) s = s + a.charAt(i);
    if(b.length() > i) s = s + b.charAt(i);
    }

    return s;
    }

    ReplyDelete
  29. SinuserDecember 31, 2021 at 6:17 PM

    public String mixString(String a, String b) {
    StringBuilder str = new StringBuilder();

    if(a.length() > 0 && a.length() <= b.length()){
    for(int i = 0; i < a.length(); i++){
    str.append(a.charAt(i));
    str.append(b.charAt(i));
    }
    str.append(b.substring(a.length(),b.length()));
    }

    else if(a.length() > 0 && b.length() >= b.length()){
    for(int i = 0; i < b.length(); i++){
    str.append(a.charAt(i));
    str.append(b.charAt(i));
    }
    str.append(a.substring(b.length(), a.length()));
    }

    else return b;

    return str.toString();
    }

    ReplyDelete
  30. RustyJanuary 17, 2022 at 7:43 PM

    public String mixString(String a, String b) {
    int longest = 0 ;
    if(a.length() >= b.length()) longest = a.length();
    else longest = b.length();

    String newStr = "" ;
    for(int x = 0; x < longest ; x++) {
    if (a.length() > x) newStr = newStr + a.charAt(x) ;
    if (b.length() > x) newStr = newStr + b.charAt(x) ;
    }
    return newStr ;
    }

    ReplyDelete
  31. FearlessJanuary 12, 2023 at 3:37 AM

    String x= "";
    int alen = a.length();
    int blen = b.length();
    String sub = "";
    if(alen > blen) sub += a.substring(blen);
    else sub += b.substring(alen);
    for (int i = 0; i < alen; i++) {
    if(a.substring(i).isEmpty() || b.substring(i).isEmpty()) break;
    else x += a.charAt(i) +""+ b.charAt(i);
    }
    return x+=sub;

    ReplyDelete
  32. FransissFebruary 27, 2023 at 10:59 AM

    public String mixString(String a, String b) {
    int max=0,min=0;
    String str="";
    String maxx="";
    if(a.length()>=b.length()){
    max=a.length();
    min=b.length();
    maxx=a;
    }
    else{
    max=b.length();
    min=a.length();
    maxx=b;
    }
    for(int i=0;i0){
    str=str+a.charAt(i)+b.charAt(i);
    min--;
    }
    else{
    str=str+maxx.charAt(i);
    }
    }
    return str;
    }

    ReplyDelete

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