Strings Done

Author: aether1a

stringing-characters-together/exercises/part-one.js

@@ -1,10 +1,28 @@
 let num = 1001;
 
 //Returns 'undefined'.
-console.log(num.length);
+// console.log(num.length);
 
 //Use type conversion to print the length (number of digits) of an integer.
-
+if (typeof num === 'number') {
+    let numStr = num.toString();
+    console.log(numStr.length);
+}
 //Follow up: Print the number of digits in a DECIMAL value (e.g. num = 123.45 has 5 digits but a length of 6).
+let num2 = 'gfd';
+if (typeof num2 === 'number'){
+    let numStr2 = num2.toString();
+    if (numStr2.includes('.')){
+        let removeDecimal = numStr2.replace('.', '');
+        console.log(removeDecimal.length);
+    
+} else{
+    console.log(numStr2.length)
+}
+} else{
+    console.log("Please input a number");
+}
 
 //Experiment! What if num could be EITHER an integer or a decimal?  Add an if/else statement so your code can handle both cases.
+
+

stringing-characters-together/exercises/part-three.js

@@ -3,15 +3,16 @@
 let language = 'JavaScript';
 
 //1. Use string concatenation and two slice() methods to print 'JS' from 'JavaScript'
-
+console.log(language.slice(0, 1)+language.slice(4, 5));
 //2. Without using slice(), use method chaining to accomplish the same thing.
-
+console.log(language.charAt(0) + language.charAt(4));
 //3. Use bracket notation and a template literal to print, "The abbreviation for 'JavaScript' is 'JS'."
-
+console.log(`The abbreviation for ${language} is ${language.slice(0,1)}${language.slice(4,5)}.`)
 //4. Just for fun, try chaining 3 or more methods together, and then print the result.
-
+console.log(`The abbreviation for ${language} is ${language.slice(0,1)}${language.charAt(4)}.`)
 //Part Three section Two
 
 //1. Use the string methods you know to print 'Title Case' from the string 'title case'.
 
 let notTitleCase = 'title case';
+console.log(notTitleCase.replace('t','T').slice(0,5)+notTitleCase.replace('c','C').slice(5,10))

stringing-characters-together/exercises/part-two.js

@@ -3,30 +3,38 @@
 let dna = " TCG-TAC-gaC-TAC-CGT-CAG-ACT-TAa-CcA-GTC-cAt-AGA-GCT    ";
 
 // First, print out the dna strand in it's current state.
-
+console.log(dna);
 //1) Use the .trim() method to remove the leading and trailing whitespace, then print the result.
 
-console.log(/* Your code here. */);
+console.log(dna.trim());
 
 //2) Change all of the letters in the dna string to UPPERCASE, then print the result.
 
-console.log();
+console.log(dna.toUpperCase());
 
 //3) Note that after applying the methods above, the original, flawed string is still stored in dna. To fix this, we need to reassign the changes to back to dna.
 //Apply these fixes to your code so that console.log(dna) prints the DNA strand in UPPERCASE with no whitespace.
-
+dna = dna.trim().toUpperCase();
 console.log(dna);
 
 //Part Two Section Two
 
 let dnaTwo = "TCG-TAC-GAC-TAC-CGT-CAG-ACT-TAA-CCA-GTC-CAT-AGA-GCT";
 
 //1) Replace the gene "GCT" with "AGG", and then print the altered strand.
+dnaTwo = dnaTwo.replace('GCT','AGG');
+console.log(dnaTwo);
 
 //2) Look for the gene "CAT" with ``indexOf()``. If found print, "CAT gene found", otherwise print, "CAT gene NOT found".
-
+if (dnaTwo.indexOf('CAT')){
+    console.log("CAT gene found");
+} else{
+    console.log('CAT gene not found');
+}
 //3) Use .slice() to print out the fifth gene (set of 3 characters) from the DNA strand.
+console.log(dnaTwo.slice(16,19));
 
 //4) Use a template literal to print, "The DNA strand is ___ characters long."
-
+console.log(`The DNA strand is ${dnaTwo.length} characters long.`)
 //5) Just for fun, apply methods to ``dna`` and use another template literal to print, 'taco cat'.
+console.log(`${dnaTwo.slice(4,7).toLowerCase()}o ${dnaTwo.slice(40,43).toLowerCase()}`)