ziada-js-wheresWaldo-class-14

class-14-js-wheresWaldo/ziada/index.js

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+const arr1 = [
+  ["A", "A", "A"],
+  ["A", "A", "A"],
+  ["A", "B", "A"]
+];
+
+
+const arr2 = [
+  ["c", "c", "c", "c"],
+  ["c", "c", "c", "d"]
+];
+
+const arr3 = [
+  ["O", "O", "O", "O"],
+  ["O", "O", "O", "O"],
+  ["O", "O", "O", "O"],
+  ["O", "O", "O", "O"],
+  ["P", "O", "O", "O"],
+  ["O", "O", "O", "O"]
+];
+
+const whereIsWaldoTest = function(arr) {
+  let result = 
+  arr.reduce((acc, curr) => {
+    for (let i = 0; i < curr.length; i++) {
+        if ( i == 0 && curr[0] !== curr[1] && curr[0] !==curr[2]) {
+          acc.push(arr.indexOf(curr)+1)
+          acc.push(0+1)
+          break
+        }
+      else  if (curr[i] !== curr[i+1] && curr[i] !==curr[0]) {
+          acc.push(arr.indexOf(curr)+1)
+          acc.push(i+1)
+          break
+        } 
+      }
+
+    console.log(acc)
+    return acc
+  }, [])
+  return result
+}
+
+whereIsWaldoTest(arr3); 
+whereIsWaldoTest(arr1);
+whereIsWaldoTest(arr2);
+
+
+
+// Another way to solve the activity
+
+// const whereIsWaldoTest = (array) => {
+//   let location = [];
+//   for (let i = 0; i < array.length; i++){
+//     for (let j = 0; j < array[i].length; j++){
+//       if (j === array[i].length - 1 && array[i][j] !== array[i][0]) {
+//         location.push(i+1);
+//         location.push(j+1);
+//         break;
+//       }
+//       else if (j !== 0){
+//         if(array[i][j] !== array[i][j+1] && array[i][j] !== array[i][j-1]) {
+//           location.push(i+1);
+//           location.push(j+1);
+//           break;
+//         }
+//       }
+//       else if(array[i][j] !== array[i][j+1] && array[i][j] !== array[i][j+2]) {
+//         location.push(i+1);
+//         location.push(j+1);
+//         break;
+//       }
+//     }
+//   }
+//   return location;
+// };
+
+// console.log(whereIsWaldoTest(arr1));
+// console.log(whereIsWaldoTest(arr2));
+// console.log(whereIsWaldoTest(arr3));

class-14-js-wheresWaldo/ziada/readme.md

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+## Where's Waldo?
+
+Return the coordinates ([row, col]) of the element that differs from the rest.
+
+### Notes:
+
+- Rows and columns are 1-indexed (not zero-indexed).
+- If you get stuck on a challenge please search it online and try to find resources
+- If you are really stuck, please ask your Instructors.
+
+
+### Examples:
+
+    whereIsWaldo([
+      ["A", "A", "A"],
+      ["A", "A", "A"],
+      ["A", "B", "A"]
+    ]) ➞ [3, 2]
+
+    whereIsWaldo([
+      ["c", "c", "c", "c"],
+      ["c", "c", "c", "d"]
+    ]) ➞ [2, 4]
+
+    whereIsWaldo([
+      ["O", "O", "O", "O"],
+      ["O", "O", "O", "O"],
+      ["O", "O", "O", "O"],
+      ["O", "O", "O", "O"],
+      ["P", "O", "O", "O"],
+      ["O", "O", "O", "O"]
+    ]) ➞ [5, 1]