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Minor refactoring of dpMaximumSubarray.

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This commit is contained in:
Oleksii Trekhleb
2018-09-04 11:39:43 +03:00
parent 814fa773ca
commit 788ff22c90
1 changed files with 5 additions and 5 deletions
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10
src/algorithms/sets/maximum-subarray/dpMaximumSubarray.js
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@ -18,10 +18,10 @@ export default function dpMaximumSubarray(inputArray) {
let currentSum = 0; let currentSum = 0;
// We need to keep track of the starting and ending indices that contributed to our maxSum // We need to keep track of the starting and ending indices that contributed to our maxSum
// so that we can return the actual subarray. // so that we can return the actual subarray. From the beginning let's assume that whole array
// is contributing to maxSum.
let maxStartIndex = 0; let maxStartIndex = 0;
let maxEndIndex = inputArray.length; let maxEndIndex = inputArray.length - 1;
let currentStartIndex = 0; let currentStartIndex = 0;
inputArray.forEach((currentNumber, currentIndex) => { inputArray.forEach((currentNumber, currentIndex) => {
@ -31,7 +31,7 @@ export default function dpMaximumSubarray(inputArray) {
if (maxSum < currentSum) { if (maxSum < currentSum) {
maxSum = currentSum; maxSum = currentSum;
maxStartIndex = currentStartIndex; maxStartIndex = currentStartIndex;
maxEndIndex = currentIndex + 1; maxEndIndex = currentIndex;
} }
// Reset currentSum and currentStartIndex if currentSum drops below 0. // Reset currentSum and currentStartIndex if currentSum drops below 0.
@ -41,5 +41,5 @@ export default function dpMaximumSubarray(inputArray) {
} }
}); });
return inputArray.slice(maxStartIndex, maxEndIndex); return inputArray.slice(maxStartIndex, maxEndIndex + 1);
} }