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update

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Ingy döt Net 2013-06-05 21:47:54 +00:00
parent 1f1ad49427
commit 6f050a029e
2496 changed files with 37609 additions and 3031 deletions
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8
Task/Balanced-brackets/D/balanced-brackets-1.d
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@ -1,10 +1,8 @@
import std.stdio, std.algorithm, std.random;
import std.stdio, std.algorithm, std.random, std.range;
void main() {
foreach (i; 1 .. 9) {
string s;
foreach (_; 0 .. i * 2)
s ~= "[]"[uniform(0, 2)];
foreach (immutable i; 1 .. 9) {
immutable s = iota(i * 2).map!(_ => "[]"[uniform(0, 2)]).array;
writeln(s.balancedParens('[', ']') ? " OK: " : "bad: ", s);
}
}

35
Task/Balanced-brackets/D/balanced-brackets-2.d
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@ -1,20 +1,23 @@
import std.stdio, std.random;
import std.stdio, std.random, std.range, std.algorithm;
bool isBalanced(in string txt) pure nothrow {
auto count = 0;
foreach (immutable c; txt) {
if (c == ']') {
count--;
if (count < 0)
return false;
} else if (c == '[')
count++;
}
return count == 0;
}
void main() {
NEXT_STR:
foreach (j; 1 .. 9) {
string s;
foreach (_; 0 .. j * 2)
s ~= "[]"[uniform(0, 2)];
int balance;
foreach (i, c; s) {
balance += (c == '[') ? 1 : ((c == ']') ? -1 : 0);
if (balance < 0 || balance >= s.length - i) {
writefln("BAD: %s (%s)", s, balance < 0 ? "-" : "+");
continue NEXT_STR;
}
}
writefln(" OK: %s (=)", s);
foreach (immutable i; 1 .. 9) {
immutable s = iota(i * 2).map!(_ => "[]"[uniform(0, 2)]).array;
writeln(s.isBalanced ? " OK " : "Bad ", s);
}
}

13
Task/Balanced-brackets/D/balanced-brackets-3.d
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@ -1,20 +1,19 @@
import std.stdio, std.random, std.conv, std.range, std.algorithm;
bool isBalanced(in char[] s) pure nothrow {
static bool bal(in char[] s, in int nb=0) pure nothrow {
bool isBalanced(in string s) pure nothrow {
static bool bal(in string s, in int nb = 0) pure nothrow {
if (nb == 0 && s.empty) return true;
if (s.empty || nb < 0) return false;
if (s[0] == '[') return bal(s[1 .. $], nb + 1);
if (s[0] == ']') return bal(s[1 .. $], nb - 1);
return bal(s[1 .. $], nb); // ignore char
return bal(s[1 .. $], nb); // Ignore char.
}
return bal(s);
}
void main() {
foreach (i; 1 .. 9) {
auto sr = iota(i * 2).map!(_ => ['[',']'][uniform(0, 2)])();
auto s = sr.array();
writefln("%5s: %s", s.isBalanced().text(), s);
foreach (immutable i; 1 .. 9) {
immutable s = iota(i * 2).map!(_ => "[]"[uniform(0, 2)]).array;
writeln(s.isBalanced ? " OK " : "Bad ", s);
}
}