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MaximumSubarray.java
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24 lines (22 loc) · 769 Bytes
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public class MaximumSubarray {
// dp[i]表示包含第i个元素时的最大和
public int maxSubArray(int[] nums) {
int[] dp = new int[nums.length];
int max = Integer.MIN_VALUE;
for (int i = 0; i < nums.length; i++) {
dp[i] = Math.max(i > 0 ? dp[i - 1] + nums[i] : nums[i], nums[i]);
max = Math.max(max, dp[i]);
}
return max;
}
/* 这里dp其实可以去掉,换成一个普通int变量即可
public int maxSubArray(int[] nums) {
int max = Integer.MIN_VALUE, prev = 0;
for (int i = 0; i < nums.length; i++) {
prev = Math.max(i > 0 ? prev + nums[i] : nums[i], nums[i]);
max = Math.max(max, prev);
}
return max;
}
*/
}