Merge/Intertwine 2 strings of differing lengths

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I would like to intertwine(?) two strings, for example:

string A = 'HELLO WORLD!'
string B = '66666666666666666666' //twenty 6's
output = 'H6E6L6L6O6 6W6O6R6L6D6!666666666'

or for instance:

string A = 'SOME REALLY REALLY LONG STRING'
string B = '66666666666666666666'  //twenty 6's
output = 'S6O6M6E6 6R6E6A6L6L6Y6 6R6E6A6L6L6Y6 6L6ONG STRING'

Is there an inbuilt function for doing something like this, what is it called?

Perhaps map?

function joinIt(strs) {
  var strA = strs[0].length <= strs[1].length?strs[0]:strs[1];
  var strB = strs[1].length <= strs[0].length?strs[0]:strs[1];

  return strB.split("").map(function(b, i) {
    var a = strA.charAt(i);
    return b + a;
  }).join("")
}
console.log(
  joinIt(['HELLO WORLD!', '66666666666666666666'])
)

console.log(
  joinIt(['SOME REALLY REALLY LONG STRING','66666666666666666666'])
)  

Alternatively Merge two Strings in Java, Given 2 strings, merge them in an alternate way, i.e. the final string's first character is the first string is added to the final string Input :string 1 :"hello" string 2 :"geeks" Output : hgeelelkos for ( int i = 0 ; i < s1.length() || i < s2.length​(); i++) { See your article appearing on the GeeksforGeeks main page and help other Geeks. How to merge two arrays ? This example shows how to merge two arrays into a single array by the use of list.Addall (array1.asList (array2) method of List class and Arrays.toString () method of Array class. The above code sample will produce the following result. Another sample example of Arrays Merge. The above code sample will produce the

There are no native JS functions, but it is a one-line function.

var stringA = 'SOME REALLY REALLY LONG STRING';
var stringB = '66666666666666666666'; //twenty 6's //twenty 6's
var stringC = '';

for (var i = 0; i < (Math.max(stringA.length, stringB.length)); i++) {
  stringC += (stringA[i] ? (stringB[i] ? stringA[i] + stringB[i] : stringA[i]) : (stringB[i] ? stringB[i] : ''));
}

console.log('stringC: ', stringC);

Merge two strings in chunks of given size, Given two strings 'a' and 'b' and a number k, our aim is to merge the strings into a C++ program to merge n number of strings If entire substring of length. Given 2 strings, merge them in an alternate way, i.e. the final string’s first character is the first character of the first string, the second character of the final string is the first character of the second string and so on. Examples: The idea is simple, we create a result string.

function interleave(str1, str2){
  let outstr = "";
  for(let i = 0; i < Math.max(str1.length, str2.length);i++){
    if(i < str1.length){
      outstr += str1[i];
    }
    if(i < str2.length){
      outstr += str2[i];
    }
  }
  return outstr;
}

console.log(interleave('aaaaa','bbbbbbbbbbbb'));

Information-Theoretic Incompleteness, can be intertwined or merged in the order that they are read by two copies of the the intertwined bit string pa (B pp is the sum of the sizes of the original strings Two other examples of intertwining: He(As) B) < He(A) + He(B) + c, and Instead we only get its size in the limit from below: H.(X, {0,1,2,, H.(X)}) = H,(X) + O(1). An interleaved string of given two strings preserves the order of characters in individual strings. For example, in all the interleavings of above first example, ‘A’ comes before ‘B’ and ‘C’ comes before ‘D’.

Using replace() you could pass the match to a callback function, then, using shift() you get the first element of the second string (turned into array) each time we have a match, at the end you add the remaining elements using + arr.join(""):

function addSomethig(str, str2){

    var arr = str2.split("");

    str = str.replace(/[A-Z ]/gi, (m)=>(arr.length>0)?m+arr.shift():m) + arr.join("");
    
    return str;

}

console.log(addSomethig('SOME REALLY REALLY LONG STRING', '66666666666666666666'));

console.log(addSomethig('HELLO WORLD!', '66666666666666666666'));

console.log(addSomethig('SOME REALLY REALLY LONG STRING', 'anything, like: 789798798798798'))

The Century Dictionary and Cyclopedia: The Century dictionary , 6556 2. To intertwine; interweave; combine. Falsehood is strangely joined and into a serpentine form; twisted like the letter S. At length a generation more refin'd . Too well he knows the twisting strings Of ardent hearts combin'd, When rent A joint formed by laying the ends of two wires past each other a few inches and  In other words, concatenation in Excel is the process of joining two or more values together. This method is often used to combine a few pieces of text that reside in different cells (technically, these are called text strings or simply strings) or insert a formula-calculated value in the middle of some text.

There's no inbuilt function, but it's easy to do:

var a = 'some long string';
var b = '2292929292302720709970709710';

var str1 = a.length < b.length ? b:a;
var str2 = a.length < b.length ? a:b;

var result = [...str1].reduce((acc, char, index) => {
    acc += char + (str2[index] || '');
    return acc; 
}, '');

console.log(result);

The Century Dictionary: An Encyclopedic Lexicon of the English , 6556 2. To intertwine; interweave; combine. Falsehood is strangely joined and into a serpentine form ; twisted like the letter S. At length a generation more refin'​d . Too well he knows the turisting strings Of ardent hearts combin'd, When rent A joint formed by laying the ends of two wires past each other a few inches  Hi Guys, I find that I am in need of some advice again… I have to join two tables, t1 has an 11 digit number, t2 is a matching number, but the string is only between 6 and 11 digits. If starting from the last number in the string (the furthest right number) the numbers will match. i.e. Both numb

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All Music Guide: The Definitive Guide to Popular Music, 0556 2. To intertwine ; interweave; combine. Falsehood is strangely Joined and A joint formed by 1 laying the ends of two wires past each other a few inches and like the letter S. twisted-stalk (t«i* )<•<) At length a generation more refln'd . Too well he knows the Uristing strings Of ardent hearts combin'd, When rent  Merge two strings in chunks of given size Alternatively Merge two Strings in Java Create a new string by alternately combining the characters of two halves of the string in reverse C program to sort an array in ascending order

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Comments
  • No native functions with such functionality, you have to write it yourself
  • Interleave would be the name of the process!
  • Why cryptography? O.o
  • @Andreas i believe there's a cryptographic cipher that is implemented this way (approx), i just cannot for the life of me remember what its called
  • This link provides a solution stackoverflow.com/questions/13253856/…
  • Also your version does not have 6 6 around the spaces
  • Fair comment @gyc.. I should update with a fix .. thanks!