added answers for drop shift1 rotate1 and tile

week01/answers.md

@@ -172,6 +172,23 @@ compilation failed while Running type inference system, 1 error(s).
 this is because `reshape([1,1], [1])` and `reshape([1], [1])` do not have the same dimensionality.
 
 ## Exercise 7
-### a)
+### a) drop
+`take(-(shape(vec) - sv), vec)`
+
+### b) tile
+`take(sv, take(-(shape(vec) - ov), vec))`
+
+### c) shift 1
+`genarray(ov, expr) ++ take(shape(vec) - ov;, vec)`
+
+### d) shift 2
+???
+
+### e) rotate 1
+`take(-ov, vec) ++ take((shape(vec) - ov), vec)`
+
+### f) rotate 2
+???
+
 
 

week01/ex7.sac

@@ -4,22 +4,68 @@ use Array: all;
 int main()
 {
   vec = [1,2,3,4,5,6];
-  sv = [1];
+  sv = [2,2];
+  ov = [2];
   // vec = reshape([3,2], vec);
 
   //a
-  printf("Drop as Take\n");
+  // printf("Drop as Take\n");
 
-  // print(shape(vec));
-  // print(shape(vec) - sv);
-  d = drop(sv, vec); // [3,4,5,6,7]
-  t = take(-(shape(vec) - sv), vec); // [1,2]
+  // d = drop(sv, vec);
+  // td = take(-(shape(vec) - sv), vec);
 
-  print(d);
-  print(t);
+  // print(d);
+  // print(td);
 
+  //b
+  // printf("Tile as Take\n");
 
-  return 0;
-}
+  // t = tile(sv, ov, vec);
+  // ttd = take(sv, drop(ov, vec));
+  // tt = take(sv, take(-(shape(vec) - ov), vec));
+
+  // print(t);
+  // print(ttd);
+  // print(tt);
+
+  //c
+  // printf("Shift 1 as Take\n");
+
+  // expr = -1;
+
+  // s = shift(ov, expr, vec);
+  // st = genarray(ov, expr) ++ take(shape(vec) - ov;, vec);
+
+  // print(s);
+  // print(st);
+
+  //d
+  // printf("Shift 2 as Take\n");
+
+  // expr = -1;
+
+  // s = shift(ov, expr, vec);
+  // st = genarray(ov, expr) ++ take(sh, vec);
 
-// [3,2] - [2] = [1]
\ No newline at end of file
+  // print(s);
+  // print(st);
+
+  //e
+  // printf("Rotate 1 as Take\n");
+
+  // r1 = rotate(ov, vec);
+  // r1t = take(-ov, vec) ++ take((shape(vec) - ov), vec);
+
+  // print(r1);
+  // print(r1t);
+
+  //f
+  // printf("Rotate 2 as Take\n");
+
+  // r2 = rotate(ov, vec);
+
+  // print(r2);
+  // print(r2t);
+
+  return 0;
+}
\ No newline at end of file