function findNonRepeatingChars(string) {
    const stringArray =  string.split('')
    const nonrecurring = []
    const resultObj = {}

    for(let char of stringArray) {
        if(!resultObj[char]) {
            resultObj[char] = 1;
        } else {
            resultObj[char] += 1;
        }
    }

    for(let char of stringArray) {
        if(resultObj[char] == 1){
            nonrecurring.push(char)
        }
    }

    return nonrecurring
}

findNonRepeatingChars('apple')