exercise triangles en diamond

exercise_triangles.js

@@ -1,3 +1,29 @@
+
+function makeLine(size, chars = "#") {
+	let line = "";
+	for (let i = 0; i < size; i++) {
+		line += "#";
+	}
+	return line
+}
+
+function makeDownwardStairs(size) {
+	let stair = "";
+	for (let i = 1; i <= size; i++) {
+		stair += makeLine(i) + "\n";
+	}
+	return stair.trim();
+}
+console.log(makeDownwardStairs(5) + "\n");
+
+
+
+/* function makeSpaceLine(numSpaces, numChars) {
+	return makeLine(numSpaces, ' ') + makeLine(numChars, '#') + makeLine(numSpaces, ' ');
+} */
+
+
+
 function makeSpaceLine(spaces, hashtags) {
 	let li = "";
 	for (let i = 1; i <= spaces; i++) {
@@ -12,4 +38,29 @@ function makeSpaceLine(spaces, hashtags) {
 	return li
 }
 
-console.log(makeSpaceLine(3, 5));
+
+console.log(makeSpaceLine(5, 6) + "\n");
+
+
+function reverse(str) {
+	return str.split('').reverse('').join('');
+}
+
+
+function makeIsoscelesTriangle(height, offset = 0) {
+	isosceles = "";
+	for (let i = 0; i < height; i++) {
+		isosceles += makeSpaceLine(height - i - 1, 2 * i + 1, offset) + "\n";
+	}
+	return isosceles.trimEnd();
+}
+
+console.log(makeIsoscelesTriangle(6));
+console.log(reverse(makeIsoscelesTriangle(6)));
+
+function makeDiamond(height) {
+	return makeIsoscelesTriangle(height) + "\n" + reverse(makeIsoscelesTriangle(height));
+}
+
+
+console.log(makeDiamond(5));