How can we replace all the occurrences of a substring with another substring within a string in MySQL? The simple way is to use regular expression with the string replace()method to replace all instances of a string in a given text. The output should return the starting indices of all occurrences as well as the permutation of the substring in the longer string. Code language: JSON / JSON with Comments (json) Note that the replaceAll() method isn’t supported by all browsers. I am learning java programming in my school. Playing with string is interesting plus a bit tricky. You will learn about the String.replace() method that is available… It returns -1 if there is no such occurrence. If the string does not contain the substring then it will return null. Swift find all occurrences of a substring I have an extension here of the String class in Swift that returns the index of the first letter of a given substring. Python Code to find all occurrences in string 1)Using list comprehension + startswith() in Python to find all occurrences in a string. Find the number of occurrences of a substring within a string. Old browser like the Internet Explorer does not support the includes property. Multiple Approximate Pattern Matching Problem. Replace all occurrences of a string in JavaScript ? 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