2019 - day2 - part 1: dirty but works

.gitignore

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+target/

2019/day1/.gitignore

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-/target

2019/day2/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "day2"
+version = "0.1.0"

2019/day2/Cargo.toml

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+[package]
+name = "day2"
+version = "0.1.0"
+authors = ["genofire <geno+dev@fireorbit.de>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2019/day2/src/main.rs

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+fn run_intcode(intcode: &mut std::vec::Vec<usize>) {
+    let mut pos = 0;
+
+    println!("\n\nrun with intcode: {:?}", intcode);
+
+    while intcode[pos] != 99 {
+        print!("run code:");
+        pos = match intcode[pos] {
+            1 => {
+                let in1 = intcode[intcode[pos + 1]];
+                let in2 = intcode[intcode[pos + 2]];
+                let pos_out = intcode[pos + 3];
+                println!(
+                    "add[{}]: value:{} + value:{} -> pos:{}",
+                    pos, in1, in2, pos_out
+                );
+                intcode[pos_out] = in1 + in2;
+                pos + 4
+            }
+            2 => {
+                let in1 = intcode[intcode[pos + 1]];
+                let in2 = intcode[intcode[pos + 2]];
+                let pos_out = intcode[pos + 3];
+                println!(
+                    "mult[{}]: value:{} * value:{} -> pos:{}",
+                    pos, in1, in2, pos_out
+                );
+                intcode[pos_out] = in1 * in2;
+                pos + 4
+            }
+            99 => {
+                println!("end program");
+                pos
+            }
+            _ => {
+                println!("unknown code");
+                pos + 1
+            }
+        }
+    }
+    println!("memory dump: {:?}\n\nresult: {}", intcode, intcode[0]);
+}
+fn main() {
+    run_intcode(&mut vec![1, 0, 0, 0, 99]);
+    run_intcode(&mut vec![2, 3, 0, 3, 99]);
+    run_intcode(&mut vec![2, 4, 4, 5, 99, 0]);
+    run_intcode(&mut vec![1, 1, 1, 4, 99, 5, 6, 0, 99]);
+    let mut intcode = vec![
+        1, 0, 0, 3, 1, 1, 2, 3, 1, 3, 4, 3, 1, 5, 0, 3, 2, 1, 6, 19, 1, 9, 19, 23, 2, 23, 10, 27,
+        1, 27, 5, 31, 1, 31, 6, 35, 1, 6, 35, 39, 2, 39, 13, 43, 1, 9, 43, 47, 2, 9, 47, 51, 1, 51,
+        6, 55, 2, 55, 10, 59, 1, 59, 5, 63, 2, 10, 63, 67, 2, 9, 67, 71, 1, 71, 5, 75, 2, 10, 75,
+        79, 1, 79, 6, 83, 2, 10, 83, 87, 1, 5, 87, 91, 2, 9, 91, 95, 1, 95, 5, 99, 1, 99, 2, 103,
+        1, 103, 13, 0, 99, 2, 14, 0, 0,
+    ];
+    intcode[1] = 12;
+    intcode[2] = 2;
+    run_intcode(&mut intcode);
+}