leetcode/test.html at master · myLazyProgrammer/leetcode · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

</body>
<script>
function sortArrayByParityII(A) {
    let oddIdx = 1
    let evenIdx = 0
    for(let i=0; i < A.length; i++){
        if(A[i] % 2 === 1){
            if(oddIdx <= A.length-1){
                swap(A, i, oddIdx)
                oddIdx += 2
            }
        }else{
            if(evenIdx <= A.length-1){
                swap(A, i, evenIdx)
                evenIdx += 2
            }
        }
        console.log(A)
    }
    return A

};

function swap(nums, n1, n2){
    let temp = nums[n1]
    nums[n1] = nums[n2]
    nums[n2] = temp
}

console.log(sortArrayByParityII(
    [3,1,4,2],
))

</script>
</html>