Merge pull request #6 from devvsakib/devvsakib

largest num index, interview q

Author: devvsakib

L-B/0004 LargestNumIndex ( L-B )/README.md

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+# 0004 LargestNumIndex ( L-B )
+
+## Problem
+
+Given an array of integers, find the index of the largest number in the array.
+
+## Test Cases
+
+- Input: [12, 3, 1, 54, 65, 4, 9], Output: 4
+- Input: [12, 3, 1, 54], Output: 3
+
+## Solution
+
+```javascript
+function largestNumIndex(arr) {
+ let largestNum = arr[0];
+ let largestNumIndex = 0;
+ for (let i = 1; i < arr.length; i++) {
+ if (arr[i] > largestNum) {
+ largestNum = arr[i];
+ largestNumIndex = i;
+ }
+ }
+ return largestNumIndex;
+}
+const arr = [12, 3, 1, 54, 65, 4, 9]
+console.log(lgNumIndex(arr)); // expected 4, largestnum - 65
+```
+
+## How it works
+
+- The function takes an array as a parameter.
+- It creates a variable called largestNum and assigns it a value of the first element of the array.
+- It creates a variable called largestNumIndex and assigns it a value of 0.
+- It creates a for loop that starts from 1 and ends at the length of the array.
+- It checks if the value of the current index is greater than the value of largestNum.
+- If it is, it assigns the value of the current index to largestNum and assigns the value of i to largestNumIndex.
+- It returns the value of largestNumIndex.
+
+## References
+
+- [Wikipedia](https://en.wikipedia.org/wiki/For_loop)
+- [GeeksforGeeks](https://www.geeksforgeeks.org/for-loop-in-javascript/)
+- [StackOverflow](https://stackoverflow.com/questions/1669190/javascript-min-max-array-values)
+
+## Problem Added By
+
+- [GitHub](https://www.github.com/devvsakib)
+- [LinkedIn](https://www.linkedin.com/in/devvsakib)
+- [Twitter](https://twitter.com/devvsakib)
+
+## Contributing
+
+Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
+
+Please make sure to update tests as appropriate.

L-B/0004 LargestNumIndex ( L-B )/largestNumIndex.js

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+function lgNumIndex(array) {
+ let largestNum = array[0];
+
+ for (const ele of array) {
+ if (largestNum < ele) {
+ largestNum = ele
+ }
+ }
+ let indexofNum = array.indexOf(largestNum);
+ return indexofNum
+}
+const arr = [12, 3, 1, 54, 65, 4, 9]
+console.log(lgNumIndex(arr)); // expected 4