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๐Ÿƒ‍โ™€๏ธprogrammers 168

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค - java ์ˆ˜์—ด๊ณผ ๊ตฌ๊ฐ„ ์ฟผ๋ฆฌ 4

class Solution { public int[] solution(int[] arr, int[][] queries) { for (int i = 0; i  ๋ฌธ์ œ๋งŒ ์ž˜ ์ดํ•ดํ•˜๋ฉด ์‰ฝ๊ฒŒ ํ’€ ์ˆ˜ ์žˆ๋‹ค.arr[i] ๊ฐ’์ด ์•„๋‹Œ ์ธ๋ฑ์Šค i ๊ฐ’๊ณผ ๋น„๊ตํ•ด์•ผํ•œ๋‹ค๋Š” ์ ๋งŒ ์ฃผ์˜ํ•˜๋ฉด ๋œ๋‹ค.

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค - java ์ˆ˜์—ด๊ณผ ๊ตฌ๊ฐ„ ์ฟผ๋ฆฌ 2

์กฐ๊ฑด์‹์—์„œ k ๋ณด๋‹ค ํฌ๋ฉด์„œ !! ๊ฐ€์žฅ ์ž‘์€ !!  ์ด ์กฐ๊ฑด์„ ๋งŒ๋“ค์ง€ ๋ชปํ•ด์„œ  ๋‹ค๋ฅธ ์ฝ”๋“œ๋ฅผ ์ฐธ๊ณ ํ–ˆ๋‹ค. ๐Ÿ˜ญ๐Ÿ˜ญ์ตœ์†Ÿ๊ฐ’ ๊ตฌํ•˜๋Š” ์•Œ๊ณ ๋ฆฌ์ฆ˜๋„ ๋„ฃ์–ด๋ณด๋ฉด์„œ ํ•ด๋ดค์ง€๋งŒ ์–ด๋””์„œ ์กฐ๊ฑด์ด ์•ˆ๋งž๋Š”์ง€ ์ž๊พธ ์˜ค๋ฅ˜๊ฐ€ ๋‚ฌ๋‹ค..๋‹ค๋ฅธ๊ฑฐ ์ฐธ๊ณ ํ• ๊นŒ ๊ณ„์† ๊ณ ๋ฏผํ•˜๋‹ค๊ฐ€ ํ•œ๋ฒˆ ํ•ด๋ณด์ž ํ–ˆ์ง€๋งŒ ...  ์‹œ๊ฐ„ ์—„์ฒญ ๋‚ ๋ฆฐ .... ๐Ÿ˜ญ๐Ÿ˜ญ ๐Ÿคฎ ์‹คํŒจํ•œ ์ฝ” ๋“œclass Solution { public int[] solution(int[] arr, int[][] queries) { int[] answer = new int[queries.length]; //3 int num = 0; for (int i = 0 ; i arr[queries[i][num+2]]){ // 2 ํฌ๊ณ  ์ œ์ผ ์ž‘์€ ๊ฐ’ ..

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค - java ์ˆ˜์—ด๊ณผ ๊ตฌ๊ฐ„ ์ฟผ๋ฆฌ 3

class Solution { public int[] solution(int[] arr, int[][] queries) { int[] answer = new int [arr.length]; int tmp = 0; int j = 0; for (int i = 0 ; i  ์ •์ˆ˜ ๋ฐฐ์—ด arr์™€ 2์ฐจ์› ์ •์ˆ˜ ๋ฐฐ์—ด queries์ด ์ฃผ์–ด์ง‘๋‹ˆ๋‹ค. queries์˜ ์›์†Œ๋Š” ๊ฐ๊ฐ ํ•˜๋‚˜์˜ query๋ฅผ ๋‚˜ํƒ€๋‚ด๋ฉฐ, [i, j] ๊ผด์ž…๋‹ˆ๋‹ค. ๊ฐ query๋งˆ๋‹ค ์ˆœ์„œ๋Œ€๋กœ arr[i]์˜ ๊ฐ’๊ณผ arr[j]์˜ ๊ฐ’์„ ์„œ๋กœ ๋ฐ”๊ฟ‰๋‹ˆ๋‹ค. ๐Ÿ’ก tmp ๋ฅผ ํ†ตํ•ด ์ž„์‹œ ๋ณด๊ด€์„ ํ•ด์ฃผ๊ณ  ๋ฐ”๊ฟ”์ฃผ๋ฉด ๋! ๐Ÿ’ฌ array2D.length; // 2์ฐจ์› ๋ฐฐ์—ด์˜ ํ–‰์˜ ๊ฐœ์ˆ˜๋ฅผ ๊ตฌํ•จ ๐Ÿ’ฌ array..

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค - java ์ˆ˜ ์กฐ์ž‘ํ•˜๊ธฐ 1

class Solution { public int solution(int n, String control) { int answer = 0; for (int i = 0 ; i  ๐Ÿ’ก  ์—ฌ๋Ÿฌ ์–ธ์–ด๋ฅผ ์“ฐ๋‹ค๋ณด๋‹ˆ๊นŒ ํ—ท๊ฐˆ๋ฆฐ๋‹ค ใ…œใ…œ !!.. ์ž๋ฐ”๋Š” ๋ฌธ์ž => ''   ๋ฌธ์ž์—ด = "" ๋กœ ๊ตฌ๋ถ„๋œ๋‹ค! ๐Ÿ’ฌ ๋ฌธ์ž(char): ๋ฌธ์ž๋Š” ๋‹จ์ผ ๋ฌธ์ž๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š” ์ž๋ฃŒํ˜•์œผ๋กœ, ์ž‘์€ ๋”ฐ์˜ดํ‘œ('')๋กœ ๊ฐ์‹ธ์—ฌ ์žˆ์Šต๋‹ˆ๋‹ค. ๋ฌธ์ž๋Š” ์œ ๋‹ˆ์ฝ”๋“œ(Unicode)๋กœ ํ‘œํ˜„๋˜๋ฉฐ, 16๋น„ํŠธ(2๋ฐ”์ดํŠธ)๋กœ ํ‘œํ˜„๋ฉ๋‹ˆ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด, 'A', 'b', '1', '$'์™€ ๊ฐ™์ด ํ•˜๋‚˜์˜ ๋ฌธ์ž๋ฅผ ๋‚˜ํƒ€๋‚ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.๐Ÿ’ฌ  ๋ฌธ์ž์—ด(String): ๋ฌธ์ž์—ด์€ ๋ฌธ์ž์˜ ์‹œํ€€์Šค์ด๋ฉฐ, ์—ฌ๋Ÿฌ ๋ฌธ์ž๊ฐ€ ์—ฐ์†์ ์œผ๋กœ ๋‚˜์—ด๋˜์–ด ์žˆ๋Š” ๊ฒƒ์„ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค..

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค - java ์ด์–ด ๋ถ™์ธ ์ˆ˜

class Solution { public int solution(int[] num_list) { int answer = 0; String a = ""; String b = ""; for (int i=0; i ๊ฐ’์„ ์ด์–ด ๋ถ™์ผ ๋• String ๊ณ„์‚ฐํ•  ๋•  int ๊ฐ’์„ ์‚ฌ์šฉํ•˜๊ธฐ ์œ„ํ•ด๋ณ€ํ™˜ํ•˜๋Š” ๋ฐฉ๋ฒ•๋งŒ ์ฃผ์˜ํ•˜๋ฉด ๋œ๋‹ค! ๐Ÿ’ฌString.valueOf() - ๋‹ค์–‘ํ•œ ํƒ€์ž…์˜ ๊ฐ’์„ ๋ฌธ์ž์—ด๋กœ ๋ณ€ํ™˜ ๐Ÿ’ฌInteger.valueOf() - ๋ฌธ์ž์—ด ๊ฐ’์„ ์ •์ˆ˜๋กœ ๋ฐ”๊พธ๋Š” ํ•จ์ˆ˜

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค - java ์›์†Œ๋“ค์˜ ๊ณฑ๊ณผ ํ•ฉ

class Solution { public int solution(int[] num_list) { int num = 0; int sum = 0; int mul = 1; for (int i =0; i ์ฃผ์˜ํ•  ์ ์€ ๊ณฑ์…ˆ ์ดˆ๊ธฐ๊ฐ’์„ 1๋กœ ์„ค์ •ํ•˜๊ธฐ !๋ญ๊ฐ€ ๋ฌธ์  ๊ฐ€ ์‹ถ์—ˆ๋Š”๋ฐ ์‹น๋‹ค ์ดˆ๊ธฐ๊ฐ’์„ 0์œผ๋กœ ํ•ด๋‘๋ฉด์„œ๊ณฑ์…ˆ ๋ณ€์ˆ˜๋„ 0์œผ๋กœ ํ•ด๋’€๋”๋‹ˆ ๊ฐ’์ด ์•ˆ๋‚˜์™”๋‹ค ๐Ÿ˜…๐Ÿ˜