/
quickUnion.js
45 lines (39 loc) · 944 Bytes
/
quickUnion.js
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console.log('quickUnion:')
/* input start */
var Generator = require('../../../generator/index');
var input = [];
for(var i = 0; i < 20; i++) {
input.push(i);
}
var combo = [];
for(var i = 0; i < 30; i++) {
combo.push(Generator.getEscRandomNumbers(2, 0, input.length).join(','));
}
combo = Generator.noRepeat(combo);
combo = combo.map(function(item) {
return item.split(',');
}).filter(function(item) {
return item[0] != item[1];
});
/* input end */
console.log('> input: ' + input + '\n combo: ' + combo.join('|'));
// quickUnion
function quickUnion(input, combo) {
for(var i = 0, len = combo.length; i < len; i++) {
var p = combo[i][0];
var q = combo[i][1];
if(root(p) != root(q)) {
input[p] = q;
}
}
return input;
function root(n) {
while(input[n] != n) {
n = input[n];
}
return n;
}
}
/* output start */
console.log('> output: ' + quickUnion(input, combo));
/* output end */