leetcode53_最长子序列和

public int maxSubArray(int[] nums) {
    int len = nums.length,ans = nums[0];
    int[] dp = new int[len];
    dp[0] = nums[0];
    for(int i = 1; i < len; i++) {
        dp[i] = Math.max(nums[i], nums[i]+dp[i-1]);
        ans = Math.max(dp[i], ans);
    }
    return ans;
}