finished 4 out of the 5 problems, will push solution to the other later

assets/js/shapes.js

@@ -1,31 +1,123 @@
 function getLine(length) {
-    // TODO - write method definition here
+    i=0; 
+    let v1="" ;
+    while(i<length)
+    {
+        v1+="*";
+        ++i;
+    }
+    return v1;
 }
 
 
 
 function getBox(width, height) {
     // TODO - write method definition here
+    i=0;
+    j=0;
+    let v1="" ;
+    while(i<height)
+    {
+        while(j<width)
+        {
+            v1+="*";
+            ++j;
+        }
+        j=0;
+        v1+="\n"
+        ++i
+
+    }
+    return v1
 }
 
 
 
 function getBottomLeftTriangle(length) {
     // TODO - write method definition here
+    i = 0;
+    j = 0;
+    let v1 = ""
+    while (i < length) {
+        for (j; j <= i; j++) {
+            v1 += "*";
+        }
+        j = 0;
+        ++i
+        if (i != length) {
+            v1 += "\n"
+        }
+
+
+
+    }
+    return v1;
 }
 
 
 function getUpperLeftTriangle(length) {
     // TODO - write method definition here
+    i=length;
+    j=0;
+    let v1=""
+    while(i>0)
+    {
+        for(i;j<i;j++)
+        {
+            v1+="*";
+        }
+        j=0;
+        --i;
+        if(i!=0)
+        {
+            v1+="\n";   
+        }
+    }
+    return v1;
 }
 
 
 
 function getPyramid(length) {
     // TODO - write method definition here
+
 }
 
 
 function getCheckerboard(width, height) {
     // TODO - write method definition here
+    i = 1;
+    j = 1;
+    let v1 = ""
+
+    while (i <= height) {
+        if (i % 2 == 0) {
+            for (j; j <= width; j++) {
+                if (j % 2 == 0) {
+                    v1 += " ";
+                }
+                else {
+                    v1 += "*";
+                }
+            }
+
+        }
+
+        else {
+            for (j; j <= width; j++) {
+                if (j % 2 == 0) {
+                    v1 += "*";
+                }
+                else {
+                    v1 += " ";
+                }
+            }
+
+        }
+        j = 1;
+        ++i
+        v1 += "\n"
+
+    }
+    return v1;
 }