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Replace a word
Easy Accuracy: 69.55% Submissions: 391 Points: 2

Given three strings S, oldW and newW. Find all occurrences of the word oldW in S and replace them with word newW.

Example 1:

Input:
S = "xxforxx xx for xx"
oldW = "xx"
newW = "Geeks"
Output:
"geeksforgeeks geeks for geeks"
Explanation:
Replacing each "xx" with
"Geeks" in S.


Example 2:

Input:
S = "india is the xx country"
oldW = "xx"
newW = "best"
Output:
"india is the best country"
Explanation:
Replacing each "xx" with
"best" in S.

You dont need to read input or print anything. Complete the function ReplaceAll() which takes S, oldW and newW as input parameters and returns the string S after replacing all oldW with newW.

Expected Time Complexity: O(n2)
Expected Auxiliary Space: O(1)

Constraints:
1<= |S| <=1000
1<= |oldW|, |newW| <=|S|