JS Snippets: String: Difference between revisions

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Стадий: 1 [Фаза:Идентифициране, Статус:Създаване]; Категория:JavaScript; { The page is created via DevStage }
 
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<noinclude><!--[[Category:JavaScript|?]]-->{{ContentArticleHeader/JavaScript}}</noinclude>
<noinclude><!--[[Category:JavaScript|?]]-->{{ContentArticleHeader/JavaScript}}</noinclude>
== References ==


* [https://codewithmosh.com/p/object-oriented-programming-in-javascript Code with Mosh: The Ultimate JavaScript Mastery Series - Part 2]
==References==
* [https://www.w3schools.com/js/default.asp W3School: JavaScript Tutorial]


== Section 1 ==
*Scrimba: [https://scrimba.com/learn/interviewchallenges JavaScript Interview Challenges]
...
*MLT GitHub: [https://github.com/metalevel-tech/exc-js-homework JavaScript Homework Tasks]
 
==Reverse a String==
<syntaxhighlight lang="typescript" line="1">
function reverse(str: string) {
    return str.split("").reverse().join("");
}
</syntaxhighlight><syntaxhighlight lang="typescript" line="1">
function reverse(str: string) {
    let newStr = "";
    for (let i = str.length - 1; i >= 0; i--) newStr += str[i];
    return newStr;
}
</syntaxhighlight>
 
== Is Palindrome==
 
* ''Palindromes are words that are the same forward or backward.''
<syntaxhighlight lang="typescript" line="1">
function isPalindrome(str: string) {
    return str === str.split("").reverse().join("");
}
</syntaxhighlight>
 
==Is Anagram==
 
*''Anagrams are groups of words that can be spelled with the same letters.''
<syntaxhighlight lang="typescript" line="1">
function isAnagram(str1: string, str2: string) {
    if (str1.length !== str2.length) return false;
    return str1.split("").sort().join("") === str2.split("").sort().join("");
}
 
</syntaxhighlight>
 
== Is Anagram: Sentences in Array ==
 
* ''[https://scrimba.com/learn/interviewchallenges/challenge-find-anagrams-in-an-array-cv2mMrHK Scrimba challenge: Find anagram in array.]''
<syntaxhighlight lang="typescript" line="1" class="code-continue" start="1">
function sortPhrase(phrase) {
  return phrase.toLowerCase().split("").sort().join("").trim("");
}
 
function isAnagramInArray(anagram, arr) {
  const anagramSorted = sortPhrase(anagram);
  return arr.filter((entry) => anagramSorted === sortPhrase(entry));
}
</syntaxhighlight>
 
<syntaxhighlight lang="javascript" class="code-continue">
const anagrams = [
  "moz biblical torchbearers",
  "it's razorbill beachcomber",
  "och mcrobbie trailblazers",
  "bib chorizo cellarmaster",
  "thor scribble carbimazole",
];
 
console.log(isAnagramInArray("Bob Ziroll Scrimba Teacher", anagrams));
</syntaxhighlight>
<syntaxhighlight lang="shell-session" class="code-continue">
(3) ['moz biblical torchbearers', 'och mcrobbie trailblazers', 'thor scribble carbimazole']
</syntaxhighlight>
 
==Title Case==
 
*''Write a function that will capitalize every word in a sentence.''
<syntaxhighlight lang="typescript" class="code-continue" line="1">
function capitalizeWord(word: string) {
    return word[0].toUpperCase() + word.slice(1);
}
 
function toTitleCase(str: string) {
    return str.split(" ").map(word => capitalizeWord(word)).join(" ");
}
</syntaxhighlight>
 
<syntaxhighlight lang="javascript" class="code-continue">
console.log(toTitleCase("pumpkin pranced purposefully across the pond"));
</syntaxhighlight>
<syntaxhighlight lang="shell-session" class="code-continue">
Pumpkin Pranced Purposefully Across The Pond
</syntaxhighlight>
 
== Remove the Duplicate Chars ==
<syntaxhighlight lang="typescript" class="code-continue" line="1">
function removeDupeChars(chars: string) {
    let output = "";
    for (const char of chars)
        if (!output.includes(char))
            output += char;
    return output;
}
</syntaxhighlight>
 
<syntaxhighlight lang="javascript" class="code-continue">
console.log(removeDupeChars("pumpkin pranced purposefully across the pond"));
</syntaxhighlight>
<syntaxhighlight lang="shell-session" class="code-continue">
pumkin racedosflyth
</syntaxhighlight>


<noinclude>
<noinclude>
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{{devStage  
{{devStage  
  | Прндл  = JavaScript
  | Прндл  = JavaScript
  | Стадий = 1
  | Стадий = 6
  | Фаза  = Идентифициране
  | Фаза  = Утвърждаване
  | Статус = Създаване
  | Статус = Утвърден
  | ИдтПт  = {{REVISIONUSER}}
  | ИдтПт = Spas
  | ИдтДт  = {{Today}}
| РзбПт  = Spas
  | ИдтРв  = {{REVISIONID}}
| АвтПт  = Spas
| УтвПт = {{REVISIONUSER}}
  | ИдтДт = 11.03.2023
| РзбДт  = 11.03.2023
| АвтДт  = 11.03.2023
| УтвДт = {{Today}}
  | ИдтРв = [[Special:Permalink/32386|32386]]
| РзбРв  = [[Special:Permalink/32389|32389]]
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}}
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</div>
</div>
</noinclude>
</noinclude>

Latest revision as of 16:23, 11 March 2023

JavaScript

Ref­er­ences

Re­verse a String

function reverse(str: string) {
    return str.split("").reverse().join("");
}

function reverse(str: string) {
    let newStr = "";
    for (let i = str.length - 1; i >= 0; i--) newStr += str[i];
    return newStr;
}

Is Palin­drome

  • Palin­dromes are words that are the same for­ward or back­ward.
function isPalindrome(str: string) {
    return str === str.split("").reverse().join("");
}

Is Ana­gram

  • Ana­grams are groups of words that can be spelled with the same let­ters.
function isAnagram(str1: string, str2: string) {
    if (str1.length !== str2.length) return false;
    return str1.split("").sort().join("") === str2.split("").sort().join("");
}

Is Ana­gram: Sen­tences in Ar­ray

function sortPhrase(phrase) {
  return phrase.toLowerCase().split("").sort().join("").trim("");
}

function isAnagramInArray(anagram, arr) {
  const anagramSorted = sortPhrase(anagram);
  return arr.filter((entry) => anagramSorted === sortPhrase(entry));
}

const anagrams = [
  "moz biblical torchbearers",
  "it's razorbill beachcomber",
  "och mcrobbie trailblazers",
  "bib chorizo cellarmaster",
  "thor scribble carbimazole",
];

console.log(isAnagramInArray("Bob Ziroll Scrimba Teacher", anagrams));

(3) ['moz biblical torchbearers', 'och mcrobbie trailblazers', 'thor scribble carbimazole']

Ti­tle Case

  • Write a func­tion that will cap­i­tal­ize every word in a sen­tence.
function capitalizeWord(word: string) {
    return word[0].toUpperCase() + word.slice(1);
}

function toTitleCase(str: string) {
    return str.split(" ").map(word => capitalizeWord(word)).join(" ");
}

console.log(toTitleCase("pumpkin pranced purposefully across the pond"));

Pumpkin Pranced Purposefully Across The Pond

Re­move the Du­pli­cate Chars

function removeDupeChars(chars: string) {
    let output = "";
    for (const char of chars)
        if (!output.includes(char))
            output += char;
    return output;
}

console.log(removeDupeChars("pumpkin pranced purposefully across the pond"));

pumkin racedosflyth


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