Data update

Task/Modular-inverse/FutureBasic/modular-inverse.basic

@@ -0,0 +1,10 @@
+NSInteger local fn ModularInverse2( a as NSInteger, b as NSInteger )
+  a %= b
+  for NSInteger x = 1 to b - 1
+    if ( (a * x) % b == 1 ) then return x
+  next
+end fn = -1
+
+print fn ModularInverse2( 42, 2017 )
+
+HandleEvents

Task/Modular-inverse/Pluto/modular-inverse.pluto

@@ -0,0 +1,5 @@
+local int = require "int"
+
+local a = 42
+local b = 2017
+print(int.modinv(a, b))

Task/Modular-inverse/Zig/modular-inverse.zig

@@ -0,0 +1,29 @@
+const std = @import("std");
+
+fn mod_inv(a: isize, module: isize) isize {
+    var mn_0 = module;
+    var mn_1 = a;
+    var xy_0: isize = 0;
+    var xy_1: isize = 1;
+
+    while (mn_1 != 0) {
+        const xy_0_temp = xy_1;
+        xy_1 = xy_0 - @divFloor(mn_0, mn_1) * xy_1;
+        xy_0 = xy_0_temp;
+
+        const mn_0_temp = mn_1;
+        mn_1 = @rem(mn_0, mn_1);
+        mn_0 = mn_0_temp;
+    }
+
+    while (xy_0 < 0) {
+        xy_0 += module;
+    }
+
+    return xy_0;
+}
+
+pub fn main() !void {
+    const stdout = std.io.getStdOut().writer();
+    try stdout.print("{d}\n", .{mod_inv(42, 2017)});
+}