#4 - javascript

Author: rlores-edison

Roadmap/04 - CADENAS DE CARACTERES/javascript/rlores-edison.js

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+/*
+ * EJERCICIO:
+ * Muestra ejemplos de todas las operaciones que puedes realizar con cadenas de caracteres
+ * en tu lenguaje. Algunas de esas operaciones podrían ser (busca todas las que puedas):
+ * - Acceso a caracteres específicos, subcadenas, longitud, concatenación, repetición, recorrido,
+ *   conversión a mayúsculas y minúsculas, reemplazo, división, unión, interpolación, verificación...
+ *
+ * DIFICULTAD EXTRA (opcional):
+ * Crea un programa que analice dos palabras diferentes y realice comprobaciones
+ * para descubrir si son:
+ * - Palíndromos (se leen igual de izquierda a derecha y de derecha a izquierda)
+ * - Anagramas (Las letras de una palabra, si se escriben en orden diferente, forman otra)
+ * - Isogramas (Las letras se repiten el mismo número de veces)
+ */
+
+// Sting length
+let text = "ABCDEFGHIJKLLLMNOPQRSTUVWXYZ";
+let length = text.length;
+console.log("Length of the text: " + length);
+
+
+// Accessing characters
+console.log("Accessing characters");
+console.log("First character: " + text[0]);
+console.log("Last character: " + text[length - 1]);
+console.log("Character at index 2: " + text[2]);
+console.log("Character at index 10: " + text[10]);
+console.log("Character at index -1: " + text[length + 1]);
+
+// Accessing substrings
+console.log("Accessing substrings");
+let substring = text.substring(2, 5);
+console.log("Substring from index 2 to index 5: " + substring);
+substring = text.substring(2);
+console.log("Substring from index 2 to the end: " + substring);
+substring = text.substring(0, length);
+console.log("Substring from the beginning to the end: " + substring);
+
+// Concatenation
+console.log("Concatenation");
+let concatenatedText = text + "123456789";
+console.log("Concatenated text: " + concatenatedText);
+
+// Repetition
+console.log("Repetition");
+let repeatedText = text + text;
+console.log("Repeated text: " + repeatedText);
+
+// Iterating over characters
+console.log("Iterating over characters");
+for (let i = 0; i < length; i++) {
+  console.log("Character at index " + i + ": " + text[i]);
+}
+
+// Iterating over substrings
+console.log("Iterating over substrings");
+for (let i = 0; i < length; i++) {
+  let substring = text.substring(i, i + 3);
+  console.log("Substring from index " + i + " to index " + (i + 3) + ": " + substring);
+}
+
+// Converting to uppercase
+console.log("Converting to uppercase");
+let uppercaseText = text.toUpperCase();
+console.log("Uppercase text: " + uppercaseText);
+
+// Converting to lowercase
+console.log("Converting to lowercase");
+let lowercaseText = text.toLowerCase();
+console.log("Lowercase text: " + lowercaseText);
+
+// Replacing characters
+console.log("Replacing characters");
+let replacedText = text.replace("A", "X");
+console.log("Replaced text: " + replacedText);
+
+// Splitting a string
+console.log("Splitting a string");
+let splitText = text.split("");
+console.log("Split text: " + splitText);
+
+//String Interpolation method: Interpolate variables and expressions into strings
+console.log("Interpolate between M and N the string: INTERPOLATED_TEXT");
+let interpolateText = `${text.slice(0, text.indexOf('N'))} INTERPOLATED_TEXT ${text.slice(text.indexOf('N'))}`;
+console.log("Interpolate text: " + interpolateText);
+
+// Checking if a string is empty
+console.log("Checking if a string is empty");
+if (text.length === 0) {
+  console.log("The text is empty");
+} else {
+  console.log("The text is not empty");
+}
+
+// Checking if a string contains a substring
+console.log("Checking if a string contains a substring");
+if (text.includes("A")) {
+  console.log("The text contains the substring 'A'");
+} else {
+  console.log("The text does not contain the substring 'A'");
+}
+
+// Checking if a string starts with a substring
+console.log("Checking if a string starts with a substring");
+if (text.startsWith("A")) {
+  console.log("The text starts with the substring 'A'");
+} else {
+  console.log("The text does not start with the substring 'A'");
+}
+
+// Checking if a string ends with a substring
+console.log("Checking if a string ends with a substring");
+if (text.endsWith("A")) {
+  console.log("The text ends with the substring 'A'");
+} else {
+  console.log("The text does not end with the substring 'A'");
+}
+
+//  Checking if a string contains a sequence of characters
+console.log("Checking if a string includes a sequence of characters");
+if (text.includes("ABCDE")) {
+  console.log("true");
+} else {
+  console.log("false");
+}
+
+console.log("Dificultad EXTRA");
+/*DIFICULTAD EXTRA (opcional):
+ * Crea un programa que analice dos palabras diferentes y realice comprobaciones
+ * para descubrir si son:
+ * - Palíndromos (se leen igual de izquierda a derecha y de derecha a izquierda)
+ * - Anagramas (Las letras de una palabra, si se escriben en orden diferente, forman otra)
+ * - Isogramas (Las letras se repiten el mismo número de veces)
+ */
+
+ 
+console.log("Reverse a string & check if it is a palindrome, anagram or isogram")
+let word1 = "oso";
+let word2 = "nana";
+
+let reversedWord = word1.split("").reverse().join("");
+console.log(`"${word1}" is a palindrome:`, word1 === reversedWord); // you can read the word in reverse
+console.log(`"${word2}" is an anagram of "${word1}":`, word2 === reversedWord);// the letters of a word cab form another word
+console.log(`"${word1}" is an isogram:`, word1.length === new Set(word1).size); // it has no repeated characters
+
+