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SwordOffer
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src
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web
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T30.java
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master
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JavaBooks
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src
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web
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T30.java
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package
web
;
/**
* @program LeetNiu
* @description: 连续子数组的最大和
* @author: mf
* @create: 2020/01/14 00:25
*/
/**
* HZ偶尔会拿些专业问题来忽悠那些非计算机专业的同学。
* 今天测试组开完会后,他又发话了:在古老的一维模式识别中,常常需要计算连续子向量的最大和,当向量全为正数的时候,问题很好解决。
* 但是,如果向量中包含负数,是否应该包含某个负数,并期望旁边的正数会弥补它呢?
* 例如:{6,-3,-2,7,-15,1,2,2},连续子向量的最大和为8(从第0个开始,到第3个为止)。
* 给一个数组,返回它的最大连续子序列的和,你会不会被他忽悠住?(子向量的长度至少是1)
*/
public
class
T30
{
public
int
FindGreatestSumOfSubArray
(
int
[]
array
) {
// 动态规划完事
if
(
array
==
null
||
array
.
length
==
0
)
return
0
;
int
res
=
array
[
0
];
// 记录当前所有子数组的和的最大值
int
max
=
array
[
0
];
// 记录包含arr[i]的连续子数组的最大值
for
(
int
i
=
1
;
i
<
array
.
length
;
i
++) {
max
=
Math
.
max
(
max
+
array
[
i
],
array
[
i
]);
res
=
Math
.
max
(
max
,
res
);
}
return
res
;
}
}
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