#4 - Javascript

Author: LauraCastrillonMp

Roadmap/04 - CADENAS DE CARACTERES/javascript/LauraCastrillonMp.js

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+// Acceso a caracteres específicos
+let string = 'Hello World!';
+let char = string[1]; // 'e'
+
+// Subcadenas
+let substring = string.substring(0, 5); // 'Hello'
+
+// Longitud
+let length = string.length; // 12
+
+// Concatenación
+let concatenated = string + ' How are you?'; // 'Hello World! How are you?'
+
+// Repetición
+let repeated = string.repeat(3); // 'Hello World!Hello World!Hello World!'
+
+// Recorrido
+for (let i = 0; i < string.length; i++) {
+    console.log(string[i]);
+}
+
+// Conversión a mayúsculas
+let upper = string.toUpperCase(); // 'HELLO WORLD!'
+
+// Conversión a minúsculas
+let lower = string.toLowerCase(); // 'hello world!'
+
+// Reemplazo
+let replaced = string.replace('World', 'Everyone'); // 'Hello Everyone!'
+
+// División
+let split = string.split(' '); // ['Hello', 'World!']
+
+// Unión
+let joined = split.join(', '); // 'Hello, World!'
+
+// Interpolación
+let name = 'Alice';
+let interpolated = `Hello, ${name}!`; // 'Hello, Alice!'
+
+// Verificación (includes)
+let contains = string.includes('World'); // true
+
+
+
+// Ejercicio:
+function isPalindrome(word) {
+    return word === word.split('').reverse().join('');
+}
+
+function isAnagram(word1, word2) {
+    let normalize = (str) => str.toLowerCase().split('').sort().join('');
+    return normalize(word1) === normalize(word2);
+}
+
+function isIsogram(word) {
+    let letters = word.toLowerCase().split('').sort();
+    for (let i = 1; i < letters.length; i++) {
+        if (letters[i] === letters[i - 1]) {
+            return false;
+        }
+    }
+    return true;
+}
+
+// Use the functions
+let word1 = 'listen';
+let word2 = 'silent';
+
+console.log(`Is "${word1}" a palindrome?`, isPalindrome(word1));
+console.log(`Is "${word2}" a palindrome?`, isPalindrome(word2));
+console.log(`Are "${word1}" and "${word2}" anagrams?`, isAnagram(word1, word2));
+console.log(`Is "${word1}" an isogram?`, isIsogram(word1));
+console.log(`Is "${word2}" an isogram?`, isIsogram(word2));