Nodejs String Sub String substrings()

Method Source Code

String.prototype.substrings = function () {
  let substrings = [];//from   w  ww  . j a v  a2  s .  c o m
  let chars = this.split('');

  for (let i = 0; i <= chars.length; i++) {
    for (let j = i + 1; j <= chars.length; j++) {
      let substring = chars.slice(i, j);
      substrings.push(substring.join(''));
    }
  }
  return substrings;
};

// let a = "cat";
// console.log(a.substrings());

Related

1. substrings()

   String.prototype.substrings = function(){
     var substrArr = [];
     for(var i = 0; i < this.length; i++){
       for(var j = i; j < this.length; j++){
         substrArr.push(this.slice(i, (j+1)));
     return substrArr;
   

2. substrings()

   String.prototype.substrings = function () {
       const res = [];
       for (let i = 0; i < this.length; i++) {
         for (let j = i + 1; j <= this.length; j++) {
           let word = this.slice(i,j);
           if (!res.includes(word)){
             res.push(word);
       return res;
   };
   

3. substrings()

   String.prototype.substrings = function() {
     var subs = [];
     for(var i = 0; i < this.length; i++) {
       for(var j = i + 1; j <= this.length; j++) {
         subs.push(this.slice(i, j));
     return subs;
   };
   ...
   

4. substrings()

   String.prototype.substrings = function () {
     let substrings = [];
     for (let start = 0; start < this.length; start++) {
       for (let len = 1; (start + len) <= this.length; len++) {
         substrings.push(this.substring(start, start + len));
     return substrings;
   };
   ...
   

5. substrings()

   String.prototype.substrings = function() {
     var substrings = []
     for (var i1 = 0; i1 < this.length; i1++) {
       for (var i2 = i1; i2 < this.length; i2++) {
         substrings.push(this.substr(i1, i2 + 1));
     return substrings;
   console.log("abc".substrings());
   

6. substrings()

   String.prototype.substrings = function () {
     let substrings = [];
     for (let start = 0; start < this.length; start++) {
       for (let len = 1; (start + len) <= this.length; len++) {
         substrings.push(this.slice(start, start + len));
     return substrings;
   };
   ...
   

7. substrings()

   String.prototype.substrings = function () {
     var substrings = [];
     for (var i = 0; i < this.length; i++) {
       for (var j = i + 1; j <= this.length; j++) {
         var sub = this.slice(i,j);
         if (substrings.indexOf(sub) === -1 ) {
           substrings.push(sub);
     return substrings;
   };
   console.log("cat".substrings());
   

8. substrings()

   String.prototype.substrings = function () {
     results = []
     for (i = 0; i < this.length; i++ ) {
       for (j = i + 1; j <= this.length; j++ ) {
         var cur_substr = this.substring(i, j);
         var includes = false;
         for (k = 0; k < results.length; k++ ) {
           if (results[k] === cur_substr) {
             includes = true;
   ...
   

9. substrings()

   String.prototype.substrings = function() {
     var substrings = [];
     for (var i = 0; i < this.length; i++){
       for (var j = i; j < this.length; j++){
         substrings.push(this.slice(i,j+1));
       };
     };
     return substrings;
   console.log(("cat").substrings());