C#

public int MaxSubArray(int[] nums) {
        
        //declarations
        int globalMax = 0;
        int currentMax = 0;

        //validation
        if(nums.Length == 1)
        return nums[0];

        //logic
        for(int i = 0; i < nums.Length ; i++)
        {
           currentMax += nums[i];
           globalMax = Math.Max(currentMax, globalMax);
           if(currentMax < 0)
           {
               currentMax = 0;
           }
        }

        return globalMax;
    }

C#

public int MaxSubArray(int[] nums) {
        
        //declarations
        int globalMax = 0;
        int currentMax = 0;

        //validation
        if(nums.Length == 1)
        return nums[0];

        //logic
        for(int i = 0; i < nums.Length ; i++)
        {
           currentMax += nums[i];
           globalMax = Math.Max(currentMax, globalMax);
           if(currentMax < 0)
           {
               currentMax = 0;
           }
        }

        return globalMax;
    }