Add 1.4 PalinPerm solution

Author: rroque98

JavaScript/chapter01/1.4 - PalinPerm/rroque98_sol.js

@@ -0,0 +1,28 @@
+// Given a string, write a function to check if it is a permutation of a palindrome
+
+const isPalindromePermutation = (str) => {
+  const strNoSpaces = str.split(' ').join('');
+  const obj = {};
+  var oddCount = 0;
+  for (let char of strNoSpaces) {
+    if (obj[char] !== undefined) {
+      obj[char]++;
+    } else {
+      obj[char] = 1;
+    }
+  }
+  for (let key in obj) {
+    if (obj[key] % 2) {
+      oddCount++;
+    }
+    if (oddCount > 1) {
+      return false;
+    }
+  }
+  return true;
+}
+
+console.log(isPalindromePermutation('tact coa') === true);
+console.log(isPalindromePermutation('tact cooa') === true);
+console.log(isPalindromePermutation('tacr coa') === false);
+console.log(isPalindromePermutation('tactr coa') === false);