ironhack-labs · willjthorp · Aug 15, 2017
diff --git a/starter-code/functions-and-arrays.js b/starter-code/functions-and-arrays.js
@@ -1,14 +1,24 @@
 // Find the maximum
 function maxOfTwoNumbers (first, second) {
-
+  if (first > second) {
+    return first 
+  } else { 
+    return second
+  }
 }

 var largest = maxOfTwoNumbers(2, 6);
 console.log(largest);

 // Finding Longest Word
 function findLongestWord (words) {
-
+  var longestWord = "";
+  for (i = 0; i < words.length; i++) {
+    if (words[i].length > longestWord.length) {
+      longestWord = words[i];
+    }
+  }
+  return longestWord.length;
 }

 var words = [
@@ -25,7 +35,11 @@ console.log(longest);

 // Calculating a Sum
 function sumArray (array) {
-
+  var sum = 0;
+  for (i = 0; i < array.length; i++) {
+    sum += array[i];
+  }
+  return sum;
 }

 var numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];
@@ -34,7 +48,11 @@ console.log(total);

 // Calculate the Average
 function averageNumbers (array) {
-
+  var sum = 0;
+  for (i = 0; i < array.length; i++) {
+    sum += array[i];
+  }
+  return (sum / array.length);
 }

 var numbers = [2, 6, 9, 10, 7, 4, 1, 9];
@@ -43,7 +61,11 @@ console.log(average);

 // Array of Strings
 function averageWordLength (array) {
-
+  var sum = 0;
+  for (i = 0; i < array.length; i++) {
+    sum += array[i].length;
+  }
+  return (sum / array.length);
 }

 var words = [
@@ -63,9 +85,16 @@ console.log(averageLength);

 // Unique Arrays
 function uniquifyArray (array) {
-
+  var newArray = [];
+  for (i = 0; i < array.length; i++) {
+    if (array.indexOf(array[i]) == i) {
+        newArray.push(array[i]);
+      }
+    }
+  return newArray;
 }

+
 var words = [
  "crab",
  "poison",
@@ -84,7 +113,12 @@ console.log(uniqued);

 // Finding Elements
 function doesWordExist (wordsArray, word) {
-
+  for (i = 0; i < wordsArray.length; i++) {
+    if (wordsArray[i] == word) {
+      return true;
+    } 
+  }
+  return false;
 }

 var words = [
@@ -106,7 +140,13 @@ console.log(hasDog);

 // Counting Repetion
 function howManyTimes (words, word) {
-
+  var count = 0;
+  for (i = 0; i < words.length; i++) {
+    if (words[i] == word) {
+      count++;
+    } 
+  }
+  return count;
 }

 var words = [
@@ -131,23 +171,69 @@ console.log(howManyDog);

 // Bonus Quest
 function greatestProduct (matrix) {
+  var answer = 0;
+  for (i = 0; i < matrix.length; i++) {
+    for (j = 0; j < matrix.length; j++) {
+
+
+        if (i === 0 && j === 0) { 
+          if ((matrix[i][j + 1] * matrix [i + 1][j] * matrix[0][19] * matrix[19][0]) > answer) {
+            answer = matrix[i][j + 1] * matrix[i + 1][j] * matrix[0][19] * matrix[19][0];
+          }
+        } else if (i === 0 && 0 < j && j < 19) {
+          if ((matrix[i][j + 1] * matrix [i + 1][j] * matrix[i][j - 1] * matrix[19][j]) > answer) {
+            answer = matrix[i][j + 1] * matrix[i + 1][j] * matrix[i][j - 1] * matrix[19][j];
+          }
+        } else if (i === 0 && j === 19) {
+          if ((matrix[19][19] * matrix [0][0] * matrix[i][j - 1] * matrix[i + 1][j]) > answer) {
+            answer = matrix[i][j + 1] * matrix[i + 1][j] * matrix[i][j - 1] * matrix[19][j];
+          }
+        } else if (0 < i && i < 19 && j === 0) {
+          if ((matrix[i - 1][j] * matrix[i][j + 1] * matrix[i + 1][j] * matrix[i][19]) > answer) {
+            answer = matrix[i - 1][j] * matrix[i][j + 1] * matrix[i + 1][j] * matrix[i][19];
+          }
+        } else if (0 < i && i < 19 && j === 19) {
+          if ((matrix[i - 1][j] * matrix[0][j] * matrix[i + 1][j] * matrix[i][j - 1]) > answer) {
+            answer = matrix[i - 1][j] * matrix[0][j] * matrix[i + 1][j] * matrix[i][j - 1];
+          }
+        } else if (i === 19 && j === 0) {
+          if ((matrix[i - 1][j] * matrix[i][j + 1] * matrix[0][0] * matrix[19][19]) > answer) {
+            answer = matrix[i - 1][j] * matrix[i][j + 1] * matrix[0][0] * matrix[19][19];
+          }
+        } else if (i === 19 && 0 < j && j < 19) {
+          if ((matrix[i - 1][j] * matrix[i][j + 1] * matrix[0][j] * matrix[i][j - 1]) > answer) {
+            answer = matrix[i - 1][j] * matrix [i][j + 1] * matrix[0][j] * matrix[i][j - 1];
+          }
+        } else if (i === 19 && j === 19) {
+          if ((matrix[i - 1][j] * matrix[0][0] * matrix[0][19] * matrix[i][j - 1]) > answer) {
+            answer = matrix[i - 1][j] * matrix[0][0] * matrix[0][19] * matrix[i][j - 1];
+          }
+        } else {
+          if ((matrix[i - 1][j] * matrix[i][j + 1] * matrix[i + 1][j] * matrix[i][j - 1]) > answer) {
+            answer = matrix[i - 1][j] * matrix[0][0] * matrix[0][19] * matrix[i][j - 1];
+          }
+        }
+
+    }
+  }
+  return answer;
+} 

-}

 var matrix = [
-  [08,02,22,97,38,15,0,40,0,75,04,05,07,78,52,12,50,77,91,08],
-  [49,49,99,40,17,81,18,57,60,87,17,40,98,43,69,48,04,56,62,0],
+  [08,02,22,97,38,15,00,40,00,75,04,05,07,78,52,12,50,77,91,08],
+  [49,49,99,40,17,81,18,57,60,87,17,40,98,43,69,48,04,56,62,00],
  [81,49,31,73,55,79,14,29,93,71,40,67,53,88,30,03,49,13,36,65],
  [52,70,95,23,04,60,11,42,69,24,68,56,01,32,56,71,37,02,36,91],
  [22,31,16,71,51,67,63,89,41,92,36,54,22,40,40,28,66,33,13,80],
  [24,47,32,60,99,03,45,02,44,75,33,53,78,36,84,20,35,17,12,50],
  [32,98,81,28,64,23,67,10,26,38,40,67,59,54,70,66,18,38,64,70],
  [67,26,20,68,02,62,12,20,95,63,94,39,63,08,40,91,66,49,94,21],
  [24,55,58,05,66,73,99,26,97,17,78,78,96,83,14,88,34,89,63,72],
-  [21,36,23,09,75,0,76,44,20,45,35,14,0,61,33,97,34,31,33,95],
+  [21,36,23,09,75,00,76,44,20,45,35,14,00,61,33,97,34,31,33,95],
  [78,17,53,28,22,75,31,67,15,94,03,80,04,62,16,14,09,53,56,92],
-  [16,39,05,42,96,35,31,47,55,58,88,24,0,17,54,24,36,29,85,57],
-  [86,56,0,48,35,71,89,07,05,44,44,37,44,60,21,58,51,54,17,58],
+  [16,39,05,42,96,35,31,47,55,58,88,24,00,17,54,24,36,29,85,57],
+  [86,56,00,48,35,71,89,07,05,44,44,37,44,60,21,58,51,54,17,58],
  [19,80,81,68,05,94,47,69,28,73,92,13,86,52,17,77,04,89,55,40],
  [04,52,08,83,97,35,99,16,07,97,57,32,16,26,26,79,33,27,98,66],
  [88,36,68,87,57,62,20,72,03,46,33,67,46,55,12,32,63,93,53,69],