5 problems solved.

lintcoder · lintcoder · commit ac29fb9c5115 · 2020-06-21T16:50:21.000+08:00
diff --git a/src/1455.cpp b/src/1455.cpp
@@ -0,0 +1,29 @@
+int isPrefixOfWord(string sentence, string searchWord) {
+        int len = sentence.size();
+        int len2 = searchWord.size();
+        int i = 0;
+        int ct = 1;
+        while (i < len)
+        {
+            int index = sentence.find(' ', i);
+            if (index == string::npos)
+            {
+                if (len-i >= len2 && sentence.substr(i, len2) == searchWord)
+                    return ct;
+                else
+                    break;
+            }
+            else
+            {
+                if (index-i >= len2 && sentence.substr(i, len2) == searchWord)
+                    return ct;
+                else
+                {
+                    i = index+1;
+                    ++ct;
+                }
+            }
+        }
+        
+        return -1;
+    }
diff --git a/src/1460.cpp b/src/1460.cpp
@@ -0,0 +1,13 @@
+bool canBeEqual(vector<int>& target, vector<int>& arr) {
+        int len = target.size();
+        sort(target.begin(), target.end());
+        sort(arr.begin(), arr.end());
+        
+        for (int i = 0; i < len; ++i)
+        {
+            if (target[i] != arr[i])
+                return false;
+        }
+        
+        return true;
+    }
diff --git a/src/1464.cpp b/src/1464.cpp
@@ -0,0 +1,23 @@
+int maxProduct(vector<int>& nums) {
+        int len = nums.size();
+        int arr[2] = {0,0};
+        arr[0] = nums[0];
+        arr[1] = nums[1];
+        if (arr[0] < arr[1])
+            swap(arr[0], arr[1]);
+        for (int i = 2; i < len; ++i)
+        {
+            if (nums[i] > arr[1])
+            {
+                if (nums[i] > arr[0])
+                {
+                    arr[1] = arr[0];
+                    arr[0] = nums[i];
+                }
+                else
+                    arr[1] = nums[i];
+            }
+        }
+        
+        return (arr[0]-1)*(arr[1]-1);
+    }
diff --git a/src/1480.cpp b/src/1480.cpp
@@ -0,0 +1,12 @@
+vector<int> runningSum(vector<int>& nums) {
+        int len = nums.size();
+        vector<int> res(len);
+        int sum = 0;
+        for (int i = 0; i < len; ++i)
+        {
+            sum += nums[i];
+            res[i] = sum;
+        }
+        
+        return res;
+    }
diff --git a/src/1486.cpp b/src/1486.cpp
@@ -0,0 +1,10 @@
+int xorOperation(int n, int start) {
+        int res = 0;
+        for (int i = 0; i < n; ++i)
+        {
+            int tmp = start + 2*i;
+            res ^= tmp;
+        }
+        
+        return res;
+    }
