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TwoSum.java
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28 lines (24 loc) · 838 Bytes
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package Chap6;
import java.util.ArrayList;
/**
* 输入一个递增排序的数组和一个数字S，在数组中查找两个数，使得他们的和正好是S；
* 如果有多对数字的和等于S，输出两个数的乘积最小的。
*/
public class TwoSum {
public ArrayList<Integer> FindNumbersWithSum(int[] array, int sum) {
ArrayList<Integer> list = new ArrayList<>();
if (array == null || array.length <= 1) return list;
int low = 0;
int high = array.length - 1;
while (low < high) {
if (array[low] + array[high] == sum) {
list.add(array[low]);
list.add(array[high]);
break;
} else if (array[low] + array[high] > sum)
high--;
else low++;
}
return list;
}
}