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Added implementatin for kadane's algorithm #1031

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Added implementatin for kadane's algorithm #1031

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4e2d751
added implementatin of kadane's algorithm
sundaram123krishnan Apr 16, 2023
5bd5f80
fixed an error in max function
sundaram123krishnan Apr 16, 2023
d641025
the search goes from 1 to array.length
sundaram123krishnan Apr 16, 2023
b51df2b
added explanations
sundaram123krishnan Apr 16, 2023
65ecad8
Fixed function parameters
sundaram123krishnan Apr 16, 2023
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18 changes: 18 additions & 0 deletions src/algorithms/uncategorized/kadane's algorithm/kadane_algo.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
/**
* Simplest Kadane's algorithm implementation.
*
* @param {*[]} array
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Suggested change
* @param {*[]} array
* @param {number[]} array

* @return {number[]}
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Suggested change
* @return {number[]}
* @return {number}

*/

export default function kadane() {
let current_sum = array[0];
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what is array?

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Thanks for pointing out , i forgot to add parameter to function.

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Suggested change
let current_sum = array[0];
let current_sum = array[0] ?? 0;

let maximum_subarray_sum = array[0];
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Suggested change
let maximum_subarray_sum = array[0];
let maximum_subarray_sum = array[0] ?? -Infinity;

or

Suggested change
let maximum_subarray_sum = array[0];
let maximum_subarray_sum = array[0] ?? - Math.pow(2, 53) - 1;


for (let i = 1; i < array.length; i++) {
current_sum = Math.max(current_sum + array[i], array[i]);
maximum_subarray_sum = Math.max(maximum_subarray_sum, current_sum);
}

return maximum_subarray_sum;
}