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fix flip optimization in pancake sort function #216

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merged 1 commit into from
Aug 23, 2016
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fix flip optimization in pancake sort function #216

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2 changes: 1 addition & 1 deletion algorithm/sorting/pancake/basic/code.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ for (var i=0;i<N-1;i++) {
var currMax = currArr.reduce((prev, curr, idx) => {
return (curr > prev.val) ? { idx: idx, val: curr} : prev;
}, {idx: 0, val: currArr[0]});
if (currMax.idx !== i) {
if (currMax.idx !== 0) { // if currMax.idx === 0 that means max element already at the bottom, no flip required
logger._print('flip at ' + (currMax.idx+i) + ' (step 1)');
flip(currMax.idx+i, N);
logger._print('flip at ' + (i) + ' (step 2)');
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