EsLint and Tests fix

- A lot of files had Linting issues. Used EsLint to fix all the troublesome files.
- Fixed the tests that were failing. Node Tests.js should run just fine now!

Author: hot9cups

LeetcodeProblems/Algorithms/2Sum.js

@@ -32,7 +32,7 @@ var twoSum = function (nums, target) {
   let map = {};
   for (let i = 0; i < nums.length; i++) {
     const sum = target - nums[i];
-    if (map[parseInt(sum)] != 0) {
+    if (sum in map) {
       return [map[sum], i];
     } else {
       map[nums[i]] = i;
@@ -43,8 +43,8 @@ var twoSum = function (nums, target) {
 //Another method
 var twoSum2 = function (nums, target) {
   for (let i = 0; i < nums.length; i++) {
-    for (let j = i + 1; j < nums.length; i++) {
-      if (nums[1] + nums[j] === target) {
+    for (let j = i + 1; j < nums.length; j++) {
+      if (nums[i] + nums[j] === target) {
         return [i, j];
       }
     }

LeetcodeProblems/Algorithms/3SumClosest.js

@@ -30,31 +30,31 @@ Constraints:
  * @param {number} target
  * @return {number}
  */
- var threeSumClosest = function(nums, target) {
+var threeSumClosest = function(nums, target) {
   let mid = 1;
   let right = nums.length - 1;
   let currentSum = nums[0] + nums[mid] + nums[right];
   let closest = currentSum;
 
-  nums.sort(function(a,b) {return a - b})
+  nums.sort(function(a,b) {return a - b;});
 
   for(var left = 0 ; left < nums.length - 1; left++) {
-      mid = left + 1;
-      right = nums.length - 1;
+    mid = left + 1;
+    right = nums.length - 1;
 
-      while(mid < right) {
-          currentSum = nums[left] + nums[mid] + nums[right];
+    while(mid < right) {
+      currentSum = nums[left] + nums[mid] + nums[right];
 
-          if(Math.abs(target - currentSum) < Math.abs(target - closest)) {
-              closest = currentSum;
-          }
+      if(Math.abs(target - currentSum) < Math.abs(target - closest)) {
+        closest = currentSum;
+      }
 
-          if(currentSum > target) {
-              right--;
-          } else {
-              mid++;
-          }
+      if(currentSum > target) {
+        right--;
+      } else {
+        mid++;
       }
+    }
   }
 
   return closest;

LeetcodeProblems/Algorithms/Container_With_Most_Water.js

@@ -24,18 +24,18 @@ Output: 1
  * @param {number[]} height
  * @return {number}
  */
- var maxArea = function(height) {
+var maxArea = function(height) {
   let left = 0;
   let right = height.length - 1;
   let maxArea = calculateArea(left, right, height);
 
   while(left < right) {
-      if(height[left] < height[right]) {
-          left++
-      } else {
-          right--;
-      }
-      maxArea = Math.max(maxArea, calculateArea(left, right, height))   
+    if(height[left] < height[right]) {
+      left++;
+    } else {
+      right--;
+    }
+    maxArea = Math.max(maxArea, calculateArea(left, right, height));   
   }
   return maxArea;
 };
@@ -44,6 +44,6 @@ var calculateArea = function(x, y, height) {
   let minHeight = height[x] > height[y] ? height[y] : height[x];
   let width = y -x;
   return (width * minHeight);
-}
+};
 
 module.exports.maxArea = maxArea;

LeetcodeProblems/Algorithms/Find_Anagrams.js

@@ -30,51 +30,51 @@ The substring with start index = 2 is "ab", which is an anagram of "ab".
  * @param {string} p
  * @return {number[]}
  */
- var findAnagrams = function(s, p) {
-  if(s.length < p.length) { return [] }
+var findAnagrams = function(s, p) {
+  if(s.length < p.length) { return []; }
 
   let start = 0;
   let end = p.length - 1;
   let hashBuild = {};
   let countLeft = p.length;
-  let anagrams = []
+  let anagrams = [];
 
   for(let e = 0; e < p.length; e++) {
-      hashBuild[p[e]] = hashBuild[p[e]] !== undefined ? hashBuild[p[e]] + 1 : 1;  
+    hashBuild[p[e]] = hashBuild[p[e]] !== undefined ? hashBuild[p[e]] + 1 : 1;  
   }
 
   for(let i = start; i < end; i++) {
-      if(hashBuild[s[i]]  !== undefined) {
-          hashBuild[s[i]] = hashBuild[s[i]] - 1;
-          if(hashBuild[s[i]] >= 0) {
-              countLeft--;
-          }
+    if(hashBuild[s[i]]  !== undefined) {
+      hashBuild[s[i]] = hashBuild[s[i]] - 1;
+      if(hashBuild[s[i]] >= 0) {
+        countLeft--;
       }
+    }
   }
 
   while(end < s.length) {
-      // check left
-      if(hashBuild[s[end]] !== undefined) {
-          hashBuild[s[end]] = hashBuild[s[end]] - 1;
-          if(hashBuild[s[end]] >= 0) {
-              countLeft--;
-          }
-          if(countLeft == 0) {
-              anagrams.push(start);
-          } 
+    // check left
+    if(hashBuild[s[end]] !== undefined) {
+      hashBuild[s[end]] = hashBuild[s[end]] - 1;
+      if(hashBuild[s[end]] >= 0) {
+        countLeft--;
       }
+      if(countLeft == 0) {
+        anagrams.push(start);
+      } 
+    }
 
-      // check right
-      if(hashBuild[s[start]] !== undefined) {
-          hashBuild[s[start]] = hashBuild[s[start]] + 1;
-          if(hashBuild[s[start]] >= 1) {
-              countLeft++;
-          }
+    // check right
+    if(hashBuild[s[start]] !== undefined) {
+      hashBuild[s[start]] = hashBuild[s[start]] + 1;
+      if(hashBuild[s[start]] >= 1) {
+        countLeft++;
       }
+    }
 
-      // slide window
-      end++;
-      start++;
+    // slide window
+    end++;
+    start++;
   }
 
   return anagrams;

LeetcodeProblems/Algorithms/Find_Subarrays_With_Equal_Sum.js

@@ -35,7 +35,7 @@ Note that even though the subarrays have the same content, the two subarrays are
  * @param {number[]} nums
  * @return {boolean}
  */
- var findSubarrays = function (nums) {
+var findSubarrays = function (nums) {
   const sumsSeen = new Set();
 
   for (let i = 0; i < nums.length - 1; i++) {

LeetcodeProblems/Algorithms/Happy_Number.js

@@ -33,17 +33,17 @@ Output: false
  * @return {boolean}
  */
 var isHappy = function(n) {
-    return checkHappyNumber(n);
+  return checkHappyNumber(n);
 };
 
 function checkHappyNumber(n){
-    strNumber = n.toString();
-    splitNumber = strNumber.split("");
-    if(splitNumber.length <= 1){
-      return (n <= 1)? true:false;
-    }
-    const digit = splitNumber.reduce((a,b)=> parseInt(a) + Math.pow(parseInt(b),2),0);
-    return checkHappyNumber(digit)
+  let strNumber = n.toString();
+  let splitNumber = strNumber.split("");
+  if(splitNumber.length <= 1){
+    return (n <= 1)? true:false;
+  }
+  const digit = splitNumber.reduce((a,b)=> parseInt(a) + Math.pow(parseInt(b),2),0);
+  return checkHappyNumber(digit);
 }
 
 module.exports.isHappy = isHappy;

LeetcodeProblems/Algorithms/Longest_Common_Prefix.js

@@ -21,13 +21,13 @@ Explanation: There is no common prefix among the input strings.
  * @param {string[]} strs
  * @return {string}
  */
- var longestCommonPrefix = function(strs) {
+var longestCommonPrefix = function(strs) {
   if(strs.length === 0) return "";
 
   return strs.reduce((result, curr)=>{
-      let i = 0;
-      while(result[i] && curr[i] && result[i] === curr[i]) i++;
-      return result.slice(0, i);
+    let i = 0;
+    while(result[i] && curr[i] && result[i] === curr[i]) i++;
+    return result.slice(0, i);
   });
 };
 

LeetcodeProblems/Algorithms/Longest_Substring.js

@@ -32,8 +32,8 @@ s consists of English letters, digits, symbols and spaces.
  * @param {string} s
  * @return {number}
  */
- var lengthOfLongestSubstring = function(s) {
-  if(s.length == 0) { return 0 }
+var lengthOfLongestSubstring = function(s) {
+  if(s.length == 0) { return 0; }
 
   var repeatedChars = new Set();
   var maxLength = 1;
@@ -45,15 +45,15 @@ s consists of English letters, digits, symbols and spaces.
   while(end + 1 < s.length && start < s.length) {
     if(repeatedChars.has(s.charAt(end + 1))) {
       if(repeatedChars.has(s.charAt(start))) {
-          currentMaxLength--;
-          repeatedChars.delete(s.charAt(start))
+        currentMaxLength--;
+        repeatedChars.delete(s.charAt(start));
       }
-        start++;
+      start++;
     } else {
       repeatedChars.add(s.charAt(end + 1));
       currentMaxLength++;
       if(currentMaxLength > maxLength) {
-          maxLength = currentMaxLength;
+        maxLength = currentMaxLength;
       }
       end++;
     }

LeetcodeProblems/Algorithms/Max_Consecutive_Ones_III.js

@@ -24,18 +24,18 @@ var longestOnes = function(nums, k) {
   let end = 0; 
   let maxWindow = 0;
   while(start < nums.length && end < nums.length) {
-      if(k > 0 || nums[end] == 1) {
-          if(nums[end] == 0) { k--; }
-          maxWindow = Math.max(maxWindow, end - start + 1);
-          end++;
-      } else { // k = 0 and nums[end] == 0
-          while(k == 0 && start < nums.length) {
-              if(nums[start] == 0) {
-                  k++;
-              }
-              start++;
-          }
+    if(k > 0 || nums[end] == 1) {
+      if(nums[end] == 0) { k--; }
+      maxWindow = Math.max(maxWindow, end - start + 1);
+      end++;
+    } else { // k = 0 and nums[end] == 0
+      while(k == 0 && start < nums.length) {
+        if(nums[start] == 0) {
+          k++;
+        }
+        start++;
       }
+    }
   }
 
   return maxWindow;

LeetcodeProblems/Algorithms/Maximise_Hour_Glass_Sum.js

@@ -31,18 +31,20 @@ Explanation: There is only one hourglass in the matrix, with the sum: 1 + 2 + 3
  * @param {number[][]} grid
  * @return {number}
  */
- var maxSum = function(grid) {
+var maxSum = function(grid) {
   const m = grid.length;
   const n = grid[0].length;
   if(m<3 || n < 3) {
-      return 0;
+    return 0;
   }
   let max = 0;
   for(let i = 0; i<m-2; i++)
-      for(let j = 0; j<n-2;j++)
-      {
-          let cur = grid[i][j] + grid[i][j+1] + grid[i][j+2] + grid[i+1][j+1] + grid[i+2][j] + grid[i+2][j+1] + grid[i+2][j+2];
-          max = Math.max(cur, max);
-      }
+    for(let j = 0; j<n-2;j++)
+    {
+      let cur = grid[i][j] + grid[i][j+1] + grid[i][j+2] + grid[i+1][j+1] + grid[i+2][j] + grid[i+2][j+1] + grid[i+2][j+2];
+      max = Math.max(cur, max);
+    }
   return max;  
-};
+};
+
+module.exports.maxSum = maxSum;

LeetcodeProblems/Algorithms/Minimize_Maximum_Pair_Sum_In_Array.js

@@ -33,12 +33,12 @@ The maximum pair sum is max(3+5, 4+4, 6+2) = max(8, 8, 8) = 8.
  * @param {number[]} nums
  * @return {number}
  */
- var minPairSum = function(nums) {
+var minPairSum = function(nums) {
   nums.sort((a, b) => a-b);
   let i = 0, j = nums.length - 1;
   let max = -Infinity;
   while (i < j) {
-      max = Math.max(max, nums[i++] + nums[j--]);
+    max = Math.max(max, nums[i++] + nums[j--]);
   }
   return max;
 };

LeetcodeProblems/Algorithms/Minimum_Add_To_Make_Parentheses_Valid.js

@@ -33,15 +33,15 @@ var minAddToMakeValid = function(s) {
   var extraParClosing = 0;
 
   for(let i = 0; i < s.length; i++) {
-      if(s.charAt(i) == "(") {
-          opening++;
-      } else if(s.charAt(i) == ")") {
-          if(opening == 0) {
-              extraParClosing++;
-          } else {
-              opening--;;
-          }
-      } 
+    if(s.charAt(i) == "(") {
+      opening++;
+    } else if(s.charAt(i) == ")") {
+      if(opening == 0) {
+        extraParClosing++;
+      } else {
+        opening--;
+      }
+    } 
   }
   return extraParClosing + opening;
 };
@@ -52,18 +52,19 @@ var minAddToMakeValidUsingQueue = function(s) {
   var extraParClosing = 0;
 
   for(let i = 0; i < s.length; i++) {
-      if(s.charAt(i) == "(") {
-          queue.push(s.charAt(i))
-      } else if(s.charAt(i) == ")") {
-          if(queue.length > 0) {
-              queue.pop();
-          } else {
-              extraParClosing++;
-          }
-      } 
+    if(s.charAt(i) == "(") {
+      queue.push(s.charAt(i));
+    } else if(s.charAt(i) == ")") {
+      if(queue.length > 0) {
+        queue.pop();
+      } else {
+        extraParClosing++;
+      }
+    } 
   }
 
   return extraParClosing + queue.length;
 };
 
-module.exports.minAddToMakeValid = minAddToMakeValid;
+module.exports.minAddToMakeValid = minAddToMakeValid;
+module.exports.minAddToMakeValidUsingQueue = minAddToMakeValidUsingQueue;