JS Snippets: String: Difference between revisions
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==Reverse a String== | ==Reverse a String== | ||
<syntaxhighlight lang="typescript"> | <syntaxhighlight lang="typescript" line="1"> | ||
function reverse(str: string) { | function reverse(str: string) { | ||
return str.split("").reverse().join(""); | return str.split("").reverse().join(""); | ||
} | } | ||
</syntaxhighlight><syntaxhighlight lang="typescript"> | </syntaxhighlight><syntaxhighlight lang="typescript" line="1"> | ||
function reverse(str: string) { | function reverse(str: string) { | ||
let newStr = ""; | let newStr = ""; | ||
| Line 22: | Line 22: | ||
* ''Palindromes are words that are the same forward or backward.'' | * ''Palindromes are words that are the same forward or backward.'' | ||
<syntaxhighlight lang="typescript"> | <syntaxhighlight lang="typescript" line="1"> | ||
function isPalindrome(str: string) { | function isPalindrome(str: string) { | ||
return str === str.split("").reverse().join(""); | return str === str.split("").reverse().join(""); | ||
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*''Anagrams are groups of words that can be spelled with the same letters.'' | *''Anagrams are groups of words that can be spelled with the same letters.'' | ||
<syntaxhighlight lang="typescript"> | <syntaxhighlight lang="typescript" line="1"> | ||
function isAnagram(str1: string, str2: string) { | function isAnagram(str1: string, str2: string) { | ||
if (str1.length !== str2.length) return false; | if (str1.length !== str2.length) return false; | ||
| Line 42: | Line 42: | ||
*''Write a function that will capitalize every word in a sentence.'' | *''Write a function that will capitalize every word in a sentence.'' | ||
<syntaxhighlight lang="typescript" class="code-continue"> | <syntaxhighlight lang="typescript" class="code-continue" line="1"> | ||
function capitalizeWord(word: string) { | function capitalizeWord(word: string) { | ||
return word[0].toUpperCase() + word.slice(1); | return word[0].toUpperCase() + word.slice(1); | ||
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== Remove the Duplicate Chars == | == Remove the Duplicate Chars == | ||
<syntaxhighlight lang="typescript" class="code-continue"> | <syntaxhighlight lang="typescript" class="code-continue" line="1"> | ||
function removeDupeChars(chars: string) { | function removeDupeChars(chars: string) { | ||
let output = ""; | let output = ""; | ||
Revision as of 15:30, 11 March 2023
References
- Scrimba: JavaScript Interview Challenges
- MLT GitHub: JavaScript Homework Tasks
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("");
}
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
