Create 2491-divide-players-into-teams-of-equal-skill.js

Author: everthis

2491-divide-players-into-teams-of-equal-skill.js

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+/**
+ * @param {number[]} skill
+ * @return {number}
+ */
+const dividePlayers = function(skill) {
+  skill.sort((a, b) => a - b)
+  const n = skill.length
+  const sum = skill[0] + skill[skill.length - 1]
+  for(let i = 1; i < n / 2; i++) {
+    const j = n - 1 - i
+    if(skill[i] + skill[j] !== sum) return -1
+  }
+  let res = skill[0] * skill[skill.length - 1]
+  for(let i = 1; i < n / 2; i++) {
+    const j = n - 1 - i
+    res += skill[i] * skill[j]
+  }
+  
+  return res
+};