Added Minimum Size Subarray problem

Author: ignacio-chiazzo

LeetcodeProblems/Algorithms/Longest_Substring.js

@@ -1,4 +1,7 @@
 /*
+Longest Substring Without Repeating Characters
+https://leetcode.com/problems/longest-substring-without-repeating-characters
+
 Given a string s, find the length of the longest substring without repeating characters.
 
 Example 1:

LeetcodeProblems/Algorithms/Minimum_Size_Subarray.js

@@ -0,0 +1,56 @@
+/*
+https://leetcode.com/problems/minimum-size-subarray-sum
+
+Given an array of positive integers nums and a positive integer target, 
+return the minimal length of a contiguous subarray [numsl, numsl+1, ..., numsr-1, numsr] 
+of which the sum is greater than or equal to target. If there is no such subarray, return 0 instead.
+
+Example 1:
+Input: target = 7, nums = [2,3,1,2,4,3]
+Output: 2
+Explanation: The subarray [4,3] has the minimal length under the problem constraint.
+
+Example 2:
+Input: target = 4, nums = [1,4,4]
+Output: 1
+
+Example 3:
+Input: target = 11, nums = [1,1,1,1,1,1,1,1]
+Output: 0
+*/
+
+/**
+ * @param {number} target
+ * @param {number[]} nums
+ * @return {number}
+ */
+ var minSubArrayLength = function(target, nums) {
+  if(nums.length == 0) { return 0 }
+  
+  let start = 0;
+  let end = 0;
+  let currentSum = nums[0];
+  let minWindow = 0;
+  let currentWindow = 1;
+  
+  while(start < nums.length && end < nums.length) {
+      currentWindow = (end + 1 - start) 
+      if(currentSum >= target || (minWindow != 0 && currentWindow > minWindow) )  {
+          if(minWindow == 0 || minWindow > currentWindow ) {
+              minWindow = currentWindow;
+              if(minWindow == 1) { return 1 };
+          }
+          currentSum -= nums[start];
+          start++;
+      } else {
+          end++;
+          if(end < nums.length) {
+              currentSum += nums[end];
+          }
+      }
+  }
+  
+  return minWindow;
+};
+
+module.exports.minSubArrayLength = minSubArrayLength;

LeetcodeProblems/RESOURCES.md

@@ -0,0 +1,2 @@
+[Common Patters on Leetcode problems]https://iorilan.medium.com/after-solved-1000-medium-leetcode-found-these-patterns-sliding-window-2-pointer-string-18332ca4861
+