LeetCode -- Sort Colors

public class Solution {
    public void SortColors(int[] nums) 
    {		
    	FindAndSwap(nums, 0, 2);
    	FindAndSwap(nums, 0, 1);
    	FindAndSwap(nums, 1, 2);
    }
    	
public void FindAndSwap(int[] nums, int left, int right){
	var i = 0;
	var k = nums.Length - 1;
	while(i < k){
		while(nums[i] != right && i < k){
           i++;
       }
       while(nums[k] != left && k > 0){
           k--;
       }
		if(i < k){
			var t = nums[i];
			nums[i] = nums[k];
			nums[k] = t;
		}
	}
}


}

public class Solution {
    public void SortColors(int[] nums) 
    {		
        var i = 0;
    	var k = nums.Length - 1;
    	var j = 0;
    	while(j <= k){
    		
    		if(nums[j] == 1){
    			j++;
    		}
    		else if(nums[j] == 0){
    			var t = nums[i];
    			nums[i] = nums[j];
    			nums[j] = t;
    			
    			j++;
    			i++;
    		}
    		else{
    			while(nums[k] == 2 && j < k){
    				k--;
    			}
    			
    			var t = nums[j];
    			nums[j] = nums[k];
    			nums[k] = t;
    			k--;
    		}
    	}
	
    }
    	


}

LeetCode -- Sort Colors

原文：http://blog.csdn.net/lan_liang/article/details/48650121