python2.7

題目：輸入一個亂序的陣列和一個數字S，在陣列中查詢兩個數，是的他們的和正好是S，如果有多對數字的和等於S，輸出兩個數。
思路：
1.輸入的是亂序陣列，先對陣列從小到大排序
2.small指向最小值，big指向最大值,sum=small+big
3，如果sum大於s說明big太大，將big指標左移一位，如果sum小於s說明small太小,將small指標右移一位，知道small>=big

#coding:utf-8
def kuaisu(a):
        low = []
        high =[]
        median =[]
        if
 
 len(a) <=1:
            return a
        else:
            baseline = a[0]
            for i in a:
                if i < baseline:
                    low.append(i)
                elif i > baseline:
                    high.append(i)
                else:
                    median.append(i)
            low_arr = kuaisu(low)
            high_arr = kuaisu(high)
            return
 
 low_arr+median+high_arr


def get_sum_s(a,n):
    a = kuaisu(a)
    low =0
    high = len(a)-1
    while low < high:
        if a[low]+a[high] == n:
            return[a[low],a[high]]
        elif a[low]+a[high] < n:
            low +=1
        elif a[low]+a[high] > n:
            high -=1
        else
 
:
            return False

print(get_sum_s([1,2,4,7,11,15],15))