Add initial version

.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/c++,vim
+# Edit at https://www.toptal.com/developers/gitignore?templates=c++,vim
+
+### C++ ###
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+### Vim ###
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+
+# End of https://www.toptal.com/developers/gitignore/api/c++,vim

LICENSE

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+MIT License
+
+Copyright (c) 2022 Moritz Biering
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

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+
+SHELL = /bin/sh
+
+NAME = ditvector
+CC = g++
+CFLAGS = -Wall -g -std=c++20
+
+.PHONY: all test clean info
+
+all: test
+
+test: test.o
+	@$(CC) $(CFLAGS) -o test test.o
+
+profile: test.o
+	@$(CC) $(CFLAGS) -pg -o profile test.o
+
+test.o: test.cpp avl.hpp bit_vector.hpp bit_vector.cpp
+	@$(CC) $(CFLAGS) -c test.cpp
+
+clean:
+	@rm -rf *.o
+
+info:
+	@echo ""
+

README.md

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+# ditvector
+
+A dynamic bitvector that support rank and select queries.
+
+The datastructure allows for one template argument that defines the size of the bitblocks stored in leaf.
+This parameter can be used to select the appropriate trade-off between space and time complexity.
+As a sensible default a size of 512 bits is used.
+
+## Operations
+
+The datastructure supports the following instructions which all have logarithmic runtime.
+* insert(index, true/false)
+* del(index)
+* set(index)
+* unset(index)
+* flip(index)
+* rank(index, true/false)
+* select(index, true/false)
+
+## Usage
+
+```c++
+BitVector<> bv;
+bv.insert(0, false);
+bv.insert(0, true);
+bv.access(0); // true
+bv.rank(1, true); // 1
+bv.flip(0);
+bv.rank(1, true); // 0
+```
+