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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                Given an array`A`?of non-negative integers, half of the integers in A are odd, and half of the integers are even. Sort the array so that whenever`A[i]`is odd,`i`is odd; and whenever`A[i]`is even,`i`is even. You may return any answer array that satisfies this condition. **Example 1:** ~~~ Input: [4,2,5,7] Output: [4,5,2,7] Explanation: [4,7,2,5], [2,5,4,7], [2,7,4,5] would also have been accepted. ~~~ **Note:** 1. `2 <= A.length <= 20000` 2. `A.length % 2 == 0` 3. `0 <= A[i] <= 1000` ``` /** * @param {number[]} A * @return {number[]} */ var sortArrayByParityII = function(arr) { arr.sort((a, b) => a - b) // 聲明一個空數組用來存儲奇偶排序后的數組 let r = [] // 記錄奇數、偶數位下標 let odd = 1 let even = 0 // 對數組進行遍歷 arr.forEach(item => { if (item % 2 === 1) { r[odd] = item odd += 2 } else { r[even] = item even += 2 } }) return r }; ```
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