oef functies les

functies.js

@@ -1,10 +1,13 @@
+'use strict'
+// rectangles
+
 function makeLine(size){
   let str = "";
   let counter = 0;
   for (; counter < size; counter++){
     str += "#";
   }
-  return str
+  return str.trim()
 }
 
 console.log(makeLine(5));
@@ -13,19 +16,67 @@ function makeSquare(size){
   let counter = 0;
   let str = "";
   for (;counter < size; counter++){
-    str += '\n' + makeLine(size);
+    str += makeLine(size) + '\n';
   }
-  return str 
+  return str.trim()
 }
 
 console.log(makeSquare(3));
 
 function makeRectangle(width, height) {
+  if (height === undefined){ // of met default parameter (height = width) of logical or || --> height = height || width (als height nieg geven wordt dan wordt width gebruikt)
+    height = width;
+  }
   let counter = 0;
   let rec = "";
   for(; counter < height; counter++){
-    rec += '\n' + makeLine(width);
+    rec += makeLine(width) + '\n';
+  }
+    return rec.trim()
+}
+console.log(makeRectangle(5,3));
+
+// triangles
+
+function stairCase(n) {
+  let stairCase = '';
+  for(let i = 1; i <= n; i++) {
+      stairCase += makeLine(i) + '\n';
   }
-  return rec
+  return stairCase.trim();
 }
-console.log(makeRectangle(5,3));
+console.log(stairCase(3)); 
+
+
+function makeSpaceLine(numSpaces, numChars){
+  let str = " ";
+  for(let i = 0; i <= numSpaces; i++){
+    str += " ";
+  }
+  return str + makeLine(numChars) + str;
+
+}
+console.log(makeSpaceLine(3,5));
+
+function makeIsoclesTriangle(height){
+  let str = "";
+  for(let i = 0; i < height; i++){
+    str += makeSpaceLine(height - i - 1, 2 * i + 1) + '\n';
+  }
+  return str.trimEnd();
+}
+
+console.log(makeIsoclesTriangle(10));
+
+
+function reverse(str){
+  return str.split('').reverse().join('');
+}
+
+
+function makeDiamond(height){
+  return makeIsoclesTriangle(height) + '\n' +reverse(makeIsoclesTriangle(height));
+}
+
+console.log(makeDiamond(5));
+console.log(reverse(makeIsoclesTriangle(5)));