Programmers #5

์ด๊ฐ•์šฉยท2023๋…„ 3์›” 15์ผ
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Programmers

๋ชฉ๋ก ๋ณด๊ธฐ
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๋ฌธ์ž์—ด์•ˆ์— ๋ฌธ์ž์—ด

๐Ÿ“‘๋ฌธ1) ๋ฌธ์ž์—ด str1, str2๊ฐ€ ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ์ฃผ์–ด์ง‘๋‹ˆ๋‹ค. str1 ์•ˆ์— str2๊ฐ€ ์žˆ๋‹ค๋ฉด 1์„ ์—†๋‹ค๋ฉด 2๋ฅผ returnํ•˜๋„๋ก solution ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•ด์ฃผ์„ธ์š”.

str1str2result
"ab6CDE443fgh22iJKlmn1o""6CD"1
"ppprrrogrammers""pppp"2
"AbcAbcA"AAA""AAA"2

๋‚˜์˜ ํ’€์ด

class Solution {
    public int solution(String str1, String str2) {
        int answer = 0;
        
        if(str1.contains(str2) == true){
            answer = 1;
            
        }else{
            answer = 2;
        }
        return answer;
    }
}

๋‚˜์˜ ์ƒ๊ฐ

๋ฌธ์ž์—ด contains method๋ฅผ ์‚ฌ์šฉํ•˜๋ฉด ์‰ฝ๊ฒŒ ํŒ๋ณ„๊ฐ€๋Šฅ


์ˆจ์–ด์žˆ๋Š” ์ˆซ์ž์˜ ๋ง์…ˆ (1)

๐Ÿ“‘๋ฌธ2) ๋ฌธ์ž์—ด my_string์ด ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ์ฃผ์–ด์ง‘๋‹ˆ๋‹ค. my_string์•ˆ์˜ ๋ชจ๋“  ์ž์—ฐ์ˆ˜๋“ค์˜ ํ•ฉ์„ returnํ•˜๋„๋ก solution ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•ด์ฃผ์„ธ์š”.

my_stringresult
"aAb1B2cC34oOp"10
"1a2b3c4d123"16

์ž…์ถœ๋ ฅ ์˜ˆ

  • "aAb1B2cC34oOp"์•ˆ์˜ ํ•œ์ž๋ฆฌ ์ž์—ฐ์ˆ˜๋Š” 1, 2, 3, 4 ์ž…๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ 1 + 2 + 3 + 4 = 10 ์„ returnํ•ฉ๋‹ˆ๋‹ค.

  • "1a2b3c4d123Z"์•ˆ์˜ ํ•œ์ž๋ฆฌ ์ž์—ฐ์ˆ˜๋Š” 1, 2, 3, 4, 1, 2, 3 ์ž…๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ 1 + 2 + 3 + 4 + 1 + 2 + 3 = 16 ์„ returnํ•ฉ๋‹ˆ๋‹ค.

๋‚˜์˜ ํ’€์ด

class Solution {
    public int solution(String my_string) {
       int answer = 0;
	        
	        for (int i = 0; i<my_string.length();i++) {
	        	if(my_string.charAt(i)>='0' && my_string.charAt(i)<='9') {
	        	answer += my_string.charAt(i) - '0';
	        	}
	        }

	        return answer;
    }
}

๋‚˜์˜ ์ƒ๊ฐ

์•„์Šคํ‚ค์ฝ”๋“œ ํ‘œ ์ƒ, 10์ง„ 48~57๋ฒˆ๊นŒ์ง€ ,๋ฌธ์ž '0'~'9'๊นŒ์ง€๋ฅผ ๋งค๊ฐœ๋ณ€์ˆ˜ my_string์—์„œ ๊ฒ€์ถœํ•˜์—ฌ intํ˜• ๋ณ€์ˆ˜ answer์— ๋”ํ•˜์—ฌ ๋ฆฌํ„ด


๋ชจ์Œ ์ œ๊ฑฐ

๐Ÿ“‘๋ฌธ3) ์˜์–ด์—์„  a, e, i, o, u ๋‹ค์„ฏ ๊ฐ€์ง€ ์•ŒํŒŒ๋ฒณ์„ ๋ชจ์Œ์œผ๋กœ ๋ถ„๋ฅ˜ํ•ฉ๋‹ˆ๋‹ค. ๋ฌธ์ž์—ด my_string์ด ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ์ฃผ์–ด์งˆ ๋•Œ ๋ชจ์Œ์„ ์ œ๊ฑฐํ•œ ๋ฌธ์ž์—ด์„ returnํ•˜๋„๋ก solution ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•ด์ฃผ์„ธ์š”.

my_stringresult
"bus""bs
"nice to meet you""nc t mt y"

์ž…์ถœ๋ ฅ ์˜ˆ

  • "bus"์—์„œ ๋ชจ์Œ u๋ฅผ ์ œ๊ฑฐํ•œ "bs"๋ฅผ returnํ•ฉ๋‹ˆ๋‹ค.
  • "nice to meet you"์—์„œ ๋ชจ์Œ i, o, e, u๋ฅผ ๋ชจ๋‘ ์ œ๊ฑฐํ•œ "nc t mt y"๋ฅผ returnํ•ฉ๋‹ˆ๋‹ค.

๋‚˜์˜ ํ’€์ด

class Solution {
    public static String solution(String my_string) {
        String answer = my_string.replaceAll("[aeiou]", "");
        System.out.println(answer);
        return answer;
    }
}

๋‚˜์˜ ์ƒ๊ฐ
String์˜ replaceAll method๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ, ๊ด„ํ˜ธ() ์ฒซ๋ฒˆ์งธ์—๋Š” ์ •๊ทœ์‹, ๋‘๋ฒˆ์งธ๋Š” ๋ฐ”๊ฟ€ ๋ฌธ์ž๋ฅผ ๋„ฃ๋Š” ๋ฐฉ๋ฒ•์„ ์ด์šฉํ•˜์—ฌ ๋ฌธ์ œ์— ์ ‘๊ทผ, ํŠน์ • ๋ฌธ์ž๋ฅผ ์ •๊ทœ์‹์œผ๋กœ ๋„ฃ์–ด, ํŠน์ •๋ฌธ์ž๊ฐ€ ํฌํ•จ๋˜๋ฉด ""์œผ๋กœ ํ•ด๋‹น ๋ฌธ์ž๋ฅผ ์ œ๊ฑฐ


Review

  • ํ•˜๋ฃจ์— ํ•œ ๋ฌธ์ œ์”ฉ ๋งŒ์ด๋ผ๋„ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ๊ด€๋ จ ๋ฌธ์ œ๋ฅผ ํ’€์ž!

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