Algorithm
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python2. 변수입력과 연산자Algorithm/python 2021. 2. 21. 19:13
a, b = input("숫자를 입력하세요: ").split() print(a + b) # 23 (string concat) c = a + b print(c) print(type(c)) # a = int(a) b = int(b) print(a + b) # 5 a, b = map(int, input("숫자를 입력하세요: ").split()) print(a + b) # 5 print(a / b) print(a // b) # 몫 print(a % b) # 나머지 print(a ** b) # a^b a = 4.3 b = 5 c = a + b print(type(c)) #
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python.1 변수와 출력 함수Algorithm/python 2021. 2. 21. 19:06
# 값 교환 a, b = 10, 20 print(a, b) # 10, 20 a, b = b, a print(a, b) # 20, 10 # 변수 타입 a = 12345 print(a) # 12345 print(type(a)) # a = 12.123456789123456789 print(a) # 12.123456789123457 print(type(a)) # # 출력방식 print("number") a, b, c = 1, 2, 3 print(a, b, c) # 1 2 3 print("number : ", a, b, c) # number : 1 2 3 print(a, b, c, sep=', ') # 1, 2, 3 print(a, end=' ') print(b, end=' ') print(c, end=' ')
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Tip4Algorithm/java tip 2020. 4. 19. 18:24
문제 : https://leetcode.com/problems/prime-number-of-set-bits-in-binary-representation/ 참고 : https://leetcode.com/problems/prime-number-of-set-bits-in-binary-representation/discuss/118471/Java-2-lines // L, R 사이의 숫자중 2진수 표현에 1의 개숫가 소수인 수의 갯수 리턴 public int countPrimeSetBits(int L, int R) { int ans = 0; for(int i=L; i
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Tip3(Easy)Algorithm/java tip 2020. 4. 14. 11:49
문제 : https://leetcode.com/problems/sum-of-root-to-leaf-binary-numbers/submissions/ 참고 : https://leetcode.com/problems/sum-of-root-to-leaf-binary-numbers/discuss/455682/Java-100-time-and-memory-Bit-Operations-(concise) List bsArray = new ArrayList(); public int sumRootToLeaf(TreeNode root) { StringBuilder sb = new StringBuilder(); sum(root, sb); int ans = 0; for(String s : bsArray) { ans += Integ..
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Tip2(easy)Algorithm/java tip 2020. 4. 13. 15:12
문제 : https://leetcode.com/problems/sort-integers-by-the-number-of-1-bits/ public int[] sortByBits(int[] arr) { // 2진수로 1의 갯수로 오름차순 정렬 // 똑같으면 그냥 오름차순 Data[] data = new Data[arr.length]; for(int i=0; i e.n).mapToInt(e -> e).toArray(); } class Data implements Comparable { public Data(int n, String bn, int cnt) { this.n = n; this.bn = bn; this.cnt = cnt; } int n; String bn; int cnt; @Override publi..