package EasyCode;

import java.util.Arrays;

import java.util.Random;

public class Sum {

public static void main(String[] args) {

// TODO Auto-generated method stub

System.out.println(Math.E);

float f = 2.34e-23f; //编译器通常会将指数作为double类型处理，所以后面要加上f

Random rand = new Random(47);

int a[] = new int[10];

for(int i = 0 ; i < 10 ; ++i){

a[i] = rand.nextInt(100);

}

for(int i : a)

System.out.println(i);

for(char c : "this is a foreach test!".toCharArray())

System.out.print(c + " ");

int b[] ;

b = new int[rand.nextInt(20)];

System.out.println("\n" + Arrays.toString(b));

}

public int[] twoSum(int[] nums , int target) {

for(int i = 0; i < nums.length; ++i){

for(int j = i + 1; j < nums.length; ++j){

if(nums[j] == target - nums[i])

return new int [] {i,j};

}

}

throw new IllegalArgumentException("No Two sum solution");

}

}