DSA/sort012java.java at main · ritam0077/DSA · GitHub

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public class sort012java {

    public static void main(String args[])
    {

        sortColors(new int[]{ 1,0,0,2,2,1,0,2,0,1});
    }

    public static void sortColors(int[] nums) {
        int lo = 0;
        int hi = nums.length - 1;
        int mid = 0;
        int temp;
        while (mid <= hi)
        {
            switch (nums[mid]) {
                case 0: {
                    temp = nums[lo];
                    nums[lo] = nums[mid];
                    nums[mid] = temp;
                    lo++;
                    mid++;
                    break;
                }
                case 1:
                    mid++;
                    break;
                case 2: {
                    temp = nums[mid];
                    nums[mid] = nums[hi];
                    nums[hi] = temp;
                    hi--;
                    break;
                }
            }
        }
        for (int i = 0; i < nums.length; i++)
        {
            System.out.println(nums[i]);
        }

    }

}