Algorithm/programmers

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๋‚ด์  (JAVA)

๋น„๋ฒ„๋ฒ„๋น„ 2021. 10. 1. 09:38

๐Ÿ“ƒ ๋ฌธ์ œ

๊ธธ์ด๊ฐ€ ๊ฐ™์€ ๋‘ 1์ฐจ์› ์ •์ˆ˜ ๋ฐฐ์—ด a, b๊ฐ€ ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ์ฃผ์–ด์ง‘๋‹ˆ๋‹ค.

a์™€ b์˜ ๋‚ด์ ์„ return ํ•˜๋„๋ก solution ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•ด์ฃผ์„ธ์š”.

์ด๋•Œ, a์™€ b์˜ ๋‚ด์ ์€ a[0]*b[0] + a[1]*b[1] + ... + a[n-1]*b[n-1] ์ž…๋‹ˆ๋‹ค. (n์€ a, b์˜ ๊ธธ์ด)

 

๐Ÿ“ ํ’€์ด

class Solution {
    public int solution(int[] a, int[] b) {
        int sum = 0;
        for (int i = 0 ; i < a.length; i++) {
            sum += (a[i] * b[i]);
        }
        return sum;
    }
}

 

https://programmers.co.kr/learn/courses/30/lessons/70128

 

์ฝ”๋”ฉํ…Œ์ŠคํŠธ ์—ฐ์Šต - ๋‚ด์ 

๊ธธ์ด๊ฐ€ ๊ฐ™์€ ๋‘ 1์ฐจ์› ์ •์ˆ˜ ๋ฐฐ์—ด a, b๊ฐ€ ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ์ฃผ์–ด์ง‘๋‹ˆ๋‹ค. a์™€ b์˜ ๋‚ด์ ์„ return ํ•˜๋„๋ก solution ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•ด์ฃผ์„ธ์š”. ์ด๋•Œ, a์™€ b์˜ ๋‚ด์ ์€ a[0]*b[0] + a[1]*b[1] + ... + a[n-1]*b[n-1] ์ž…๋‹ˆ๋‹ค. (n์€ a, b์˜

programmers.co.kr

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