Chris Stefan - 13 basic algorithms

test.txt

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+//1. Print all the integers from 1 to 255.
+
+function count() {
+    for(var i = 1; i <= 255; i++) {
+        console.log(i);
+    }
+}
+
+count();
+
+//2. Print Odds 1-255
+function count() {
+    for(var i = 1; i <= 255; i = i + 2) {
+        console.log(i);
+    }
+}
+
+count();
+
+//3. Print integers from 0 to 255, and with each integer print the sum so far.
+function sum() {
+  var sum = 0;
+  for (var i = 0; i <= 255; i++) {
+    sum = sum + i;
+    console.log(i + ' , ' + sum);
+  }
+}
+
+sum();
+
+//4. Iterate through a given array, printing each value.
+var arr = [1, 'run', 4.32, [3,4]];
+for (var i = 0; i <= arr.length; i++) {
+   console.log(arr[i]);
+ }
+
+ //5. Given an array, find and print its largest element.
+ var arr = [1, 2, 34, 63, -1];
+ var large = 0;
+ for (var i = 0; i <= large; i++) {
+      if (arr[i]>large) {
+      var large=arr[i];
+    }
+}
+
+console.log(large);
+
+//6. Analyze an array's values and print the average.
+var arr = [1, 2, 3, 4, 5, 6];
+var total = 0;
+  for (var i = 0; i < arr.length; i++) {
+    total += arr[i];
+  }
+var avg = total / arr.length;
+
+console.log(avg);
+
+//7. Create an array with all the odd integers between 1 and 255(inclusive).
+var arr = [];
+for(var i = 1; i <= 255; i += 2) {
+  arr.push(i);
+}
+console.log(arr);
+
+//8. Square each value in a given array, returning that same array with changed values.
+function squared() {
+var arr = [1,2,3,4,5,6,7,8];
+arr.forEach(function(element, index, array){
+    array[index] = element* element;
+});
+console.log(arr);
+
+//9.Given an array and value Y, count and print the number array values greater than Y.
+greaterThanY(arr, Y){
+var count = 0;
+  for( var i = 0; i<arr.length; i++){
+  count = count + 1;
+  }
+}
+console.log (count);
+
+//10. Return the given array, after setting any negative values to zero.
+zeroOut(arr){
+for(var i = 0; i  <arr.length; i++){
+  if(arr[i] < 0){
+  arr[i] = 0;
+  }
+}
+console.log(arr);
+
+//11. Given an array, print the max, min, and average values for that array.
+function PrintMaxMinAverageArrayVals(arr){
+  var max = -Infinity
+  var min = Infinity
+  var sum = 0
+
+  for(var i=0;i<arr.length;i++){
+  sum = sum + arr[i];
+  if(arr[i]>max){
+  max = arr[i];
+}
+  else if (arr[i] < min){
+ min = arr[i];
+ }
+}
+var average = sum / arr.length;
+console.log(max);
+console.log(min);
+console.log(average);
+
+//12. Given an array, move all values forward (to the left) by one index, dropping the first value and leaving a zero value at the end of the array.
+function shiftLeft(arr){
+  for(var i=0;i<arr.length;i++){
+  arr[i] = (arr[i+1] || 0) ;
+  }
+console.log(arr);
+}
+shiftLeft(arr);
+
+//13. Given an array of numbers, replace any negative values with the string "Dojo".
+function swap(arr){
+  for(var i=0; i<arr.length;i++){
+    if(arr[i]<0){
+      arr[i]= "Dojo";
+        }
+      }
+ console.log(arr);
+ }
+swap();