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1
.envrc Normal file
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use flake .

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.gitignore vendored Normal file
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# Compiled class file
*.class
# Log file
*.log
# BlueJ files
*.ctxt
# Mobile Tools for Java (J2ME)
.mtj.tmp/
# Package Files #
*.jar
*.war
*.nar
*.ear
*.zip
*.tar.gz
*.rar
# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
hs_err_pid*
replay_pid*

3
.idea/.gitignore generated vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml

6
.idea/misc.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectRootManager" version="2" project-jdk-name="openjdk-25" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
</project>

8
.idea/modules.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/countDigitsIterative.iml" filepath="$PROJECT_DIR$/countDigitsIterative.iml" />
</modules>
</component>
</project>

18
CountDigits.java Normal file
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public class CountDigits {
public int countDigitsIterativ(int n) {
int count = 0;
while (n != 0) {
n /= 10;
count++;
}
return count;
}
public int countDigitsRekursiv(int n) {
if (n != 0) {
n /= 10;
return 1 + countDigitsRekursiv(n);
}
return 0;
}
}

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GNUmakefile Normal file
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JAVA_FMT = google-java-format
JAVA_FILES = $(shell find . -name '*.java')
XML_FMT = xmlindent
XML_FILES = $(shell find . -name '*.xml')
.PHONY: fmt
fmt:
@echo "Formatting all Java files..."
@for f in $(JAVA_FILES); do \
echo " $$f"; \
$(JAVA_FMT) -i $$f; \
done

9
Main.java Normal file
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public class Main {
public static void main(String[] args) {
CountDigits countDigits = new CountDigits();
for (int index = 10; index < 110; index += 10) {
System.out.println("Iterativ" + countDigits.countDigitsIterativ(index));
System.out.println("Rekursiv" + countDigits.countDigitsRekursiv(index));
}
}
}

2
README.md Normal file
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# Count digits
Count digits teilt die Zahl n durch 10 und gibt danach die zahl zurück als int wie oft die zahl teilbar ist.

11
countDigitsIterative.iml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

61
flake.lock generated Normal file
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{
"nodes": {
"flake-parts": {
"inputs": {
"nixpkgs-lib": "nixpkgs-lib"
},
"locked": {
"lastModified": 1762980239,
"narHash": "sha256-8oNVE8TrD19ulHinjaqONf9QWCKK+w4url56cdStMpM=",
"owner": "hercules-ci",
"repo": "flake-parts",
"rev": "52a2caecc898d0b46b2b905f058ccc5081f842da",
"type": "github"
},
"original": {
"owner": "hercules-ci",
"repo": "flake-parts",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1762977756,
"narHash": "sha256-4PqRErxfe+2toFJFgcRKZ0UI9NSIOJa+7RXVtBhy4KE=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "c5ae371f1a6a7fd27823bc500d9390b38c05fa55",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs-lib": {
"locked": {
"lastModified": 1761765539,
"narHash": "sha256-b0yj6kfvO8ApcSE+QmA6mUfu8IYG6/uU28OFn4PaC8M=",
"owner": "nix-community",
"repo": "nixpkgs.lib",
"rev": "719359f4562934ae99f5443f20aa06c2ffff91fc",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "nixpkgs.lib",
"type": "github"
}
},
"root": {
"inputs": {
"flake-parts": "flake-parts",
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

57
flake.nix Normal file
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{
description = "count digits iterativ";
inputs = {
flake-parts.url = "github:hercules-ci/flake-parts";
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
};
outputs = inputs@{ flake-parts, ... }:
flake-parts.lib.mkFlake { inherit inputs; } {
imports = [
];
systems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin" ];
perSystem = { config, self', inputs', pkgs, system, ... }: let
jdk = pkgs.jdk21.override {
};
buildInputs = [
jdk
];
devTools = [
pkgs.google-java-format
];
in {
devShells.default = pkgs.mkShell {
buildInputs = buildInputs ++ devTools;
};
packages = {
default = pkgs.stdenv.mkDerivation {
pname = "count-digits-iterativ";
version = "1.0.0";
src = ./.;
nativeBuildInputs = buildInputs ++ [ pkgs.makeWrapper ];
buildPhase = ''
javac -Werror -g:none -deprecation -verbose Main.java
'';
installPhase = ''
mkdir -p $out/{bin,lib}
cp *.class $out/lib
makeWrapper ${pkgs.lib.getExe jdk} $out/bin/count-digits-iterativ --add-flags "-cp $out/lib/ Main"
'';
};
};
};
flake = {
};
};
}

1
out/production/countDigitsIterative/.envrc Normal file
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use flake .

24
out/production/countDigitsIterative/.gitignore vendored Normal file
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# Compiled class file
*.class
# Log file
*.log
# BlueJ files
*.ctxt
# Mobile Tools for Java (J2ME)
.mtj.tmp/
# Package Files #
*.jar
*.war
*.nar
*.ear
*.zip
*.tar.gz
*.rar
# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
hs_err_pid*
replay_pid*

3
out/production/countDigitsIterative/.idea/.gitignore generated vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml

6
out/production/countDigitsIterative/.idea/misc.xml generated Normal file
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@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectRootManager" version="2" project-jdk-name="openjdk-25" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
</project>

8
out/production/countDigitsIterative/.idea/modules.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/countDigitsIterative.iml" filepath="$PROJECT_DIR$/countDigitsIterative.iml" />
</modules>
</component>
</project>

12
out/production/countDigitsIterative/GNUmakefile Normal file
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JAVA_FMT = google-java-format
JAVA_FILES = $(shell find . -name '*.java')
XML_FMT = xmlindent
XML_FILES = $(shell find . -name '*.xml')
.PHONY: fmt
fmt:
@echo "Formatting all Java files..."
@for f in $(JAVA_FILES); do \
echo " $$f"; \
$(JAVA_FMT) -i $$f; \
done

2
out/production/countDigitsIterative/README.md Normal file
View File

@ -0,0 +1,2 @@
# Count digits
Count digits teilt die Zahl n durch 10 und gibt danach die zahl zurück als int wie oft die zahl teilbar ist.

11
out/production/countDigitsIterative/countDigitsIterative.iml Normal file
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@ -0,0 +1,11 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

61
out/production/countDigitsIterative/flake.lock generated Normal file
View File

@ -0,0 +1,61 @@
{
"nodes": {
"flake-parts": {
"inputs": {
"nixpkgs-lib": "nixpkgs-lib"
},
"locked": {
"lastModified": 1762980239,
"narHash": "sha256-8oNVE8TrD19ulHinjaqONf9QWCKK+w4url56cdStMpM=",
"owner": "hercules-ci",
"repo": "flake-parts",
"rev": "52a2caecc898d0b46b2b905f058ccc5081f842da",
"type": "github"
},
"original": {
"owner": "hercules-ci",
"repo": "flake-parts",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1762977756,
"narHash": "sha256-4PqRErxfe+2toFJFgcRKZ0UI9NSIOJa+7RXVtBhy4KE=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "c5ae371f1a6a7fd27823bc500d9390b38c05fa55",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs-lib": {
"locked": {
"lastModified": 1761765539,
"narHash": "sha256-b0yj6kfvO8ApcSE+QmA6mUfu8IYG6/uU28OFn4PaC8M=",
"owner": "nix-community",
"repo": "nixpkgs.lib",
"rev": "719359f4562934ae99f5443f20aa06c2ffff91fc",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "nixpkgs.lib",
"type": "github"
}
},
"root": {
"inputs": {
"flake-parts": "flake-parts",
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

57
out/production/countDigitsIterative/flake.nix Normal file
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{
description = "count digits iterativ";
inputs = {
flake-parts.url = "github:hercules-ci/flake-parts";
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
};
outputs = inputs@{ flake-parts, ... }:
flake-parts.lib.mkFlake { inherit inputs; } {
imports = [
];
systems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin" ];
perSystem = { config, self', inputs', pkgs, system, ... }: let
jdk = pkgs.jdk21.override {
};
buildInputs = [
jdk
];
devTools = [
pkgs.google-java-format
];
in {
devShells.default = pkgs.mkShell {
buildInputs = buildInputs ++ devTools;
};
packages = {
default = pkgs.stdenv.mkDerivation {
pname = "count-digits-iterativ";
version = "1.0.0";
src = ./.;
nativeBuildInputs = buildInputs ++ [ pkgs.makeWrapper ];
buildPhase = ''
javac -Werror -g:none -deprecation -verbose Main.java
'';
installPhase = ''
mkdir -p $out/{bin,lib}
cp *.class $out/lib
makeWrapper ${pkgs.lib.getExe jdk} $out/bin/count-digits-iterativ --add-flags "-cp $out/lib/ Main"
'';
};
};
};
flake = {
};
};
}