Given an array of integers that is already sorted in ascending order, find two numbers such that the
這道題自己思路也對了,就是陣列使用出了點問題,然後就是看了別人的程式碼才改過來,用到匿名陣列。
不多說,看程式碼,
class Solution {
public int[] twoSum(int[] numbers, int target) {
if(numbers==null || numbers.length < 1) return null;
int i=0, j=numbers.length-1;
while(i<j) {
int x = numbers[i] + numbers[j];
if(x<target) {//如果和小於目標值,這說明要往左邊移,因為是升序陣列,反之也一樣
++i;
} else if(x>target) {
--j;
} else {
return new int[]{i+1, j+1};
}
}
return null;
}
}
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