+
+ function writeSplitPhrase(phrase) {
+ var wordCount = phrase.split(/\s/g).length; //get number of words in phrase
+ var left=[]; //initialize array of indexs
+ for (var i=0;i<wordCount;i++) left.push(i); //add all indexs to array
+ var group=[[],[],[]], //make array for 3 groups
+ groupI=-1; //initialize group index
+ var seed = Math.abs(sjcl.hash.sha256.hash(phrase)[0])% 2147483647; //start seed at sudo random value based on hash of words
+ while (left.length>0) { //while indexs left
+ groupI=(groupI+1)%3; //get next group to insert index into
+ seed = seed * 16807 % 2147483647; //change random value.(simple predicatable random number generator works well for this use)
+ var selected=Math.floor(left.length*(seed - 1) / 2147483646); //get index in left we will use for this group
+ group[groupI].push(left[selected]); //add index to group
+ left.splice(selected,1); //remove selected index
+ }
+ var cards=[phrase.split(/\s/g),phrase.split(/\s/g),phrase.split(/\s/g)];//make array of cards
+ for (var i=0;i<3;i++) { //go through each card
+ for (var ii=0;ii<wordCount/3;ii++) cards[i][group[i][ii]]='XXXX'; //erase words listed in the group
+ cards[i]='Card '+(i+1)+': '+wordArrayToPhrase(cards[i]); //combine words on card back to string
+ }
+ DOM.splitPhrase.val(cards.join("\r\n")); //make words visible
+ }