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    var n = a.length;
    for (var i = 0; i < n; i++) {
        for (var j = 0; j < n - 1; j++) {
            if (a[j] > a[j + 1]) {
                var tmp = a[j];
                a[j] = a[j + 1];
                a[j + 1] = tmp;
                c++;
            }
        }
    }