Data commit

Task/CUSIP/Zig/cusip.zig

@@ -0,0 +1,49 @@
+const std = @import("std");
+const print = std.debug.print;
+
+pub fn CusipCheckDigit(cusip: *const [9:0]u8) bool {
+    var i: usize = 0;
+    var sum: i32 = 0;
+    while (i < 8) {
+        const c = cusip[i];
+        var v: i32 = undefined;
+        if (c <= '9' and c >= '0') {
+            v = c - 48;
+        }
+        else if (c <= 'Z' and c >= 'A') {
+            v = c - 55;
+        }
+        else if (c == '*') {
+            v = 36;
+        }
+        else if (c == '@') {
+            v = 37;
+        }
+        else if (c == '#') {
+            v = 38;
+        }
+        else {
+            return false;
+        }
+        if (i % 2 == 1) {
+            v *= 2;
+        }
+        sum = sum + @divFloor(v, 10) + @mod(v, 10);
+        i += 1;
+    }
+    return (cusip[8] - 48 == @mod((10 - @mod(sum, 10)), 10));
+}
+
+pub fn main() void {
+    const cusips = [_]*const [9:0]u8 {
+        "037833100",
+        "17275R102",
+        "38259P508",
+        "594918104",
+        "68389X106",
+        "68389X105"
+    };
+    for (cusips) |cusip| {
+        print("{s} -> {}\n", .{cusip, CusipCheckDigit(cusip)});
+    }
+}